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Our amazing offer consists of a great variety of AR-10, AR-15, and pistol parts and accessories. Purchase upper receivers, muzzle devices, handguards, BCG, barrels, triggers, magazine extensions, etc., and start modifying your firearm today.

Parts

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  1. True Precision Sig Sauer P365XL X-Fluted Match Grade Barrel
    True Precision Sig Sauer P365XL X-Fluted Match Grade Barrel
    As low as $161.49
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  2. CMT Tactical AR-15 UHPR MOD 1 HANDGUARD - 17"
    CMT Tactical AR-15 UHPR MOD 1 HANDGUARD - 17"
    Special Price $175.00 Regular Price $201.00
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  3. Killer Innovations Velocity CZ P-10C Compensator
    Killer Innovations Velocity CZ P-10C Compensator
    As low as $112.49
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  4. Killer Innovations CZ P10-C Non-Threaded Velocity Barrel
    Killer Innovations CZ P10-C Non-Threaded Velocity Barrel
    As low as $209.99
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  5. Killer Innovations Velocity CZ P-10C +5 Magazine Extension
    Killer Innovations Velocity CZ P-10C +5 Magazine Extension
    As low as $49.99
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  6. Okay Industries SureFeed E2 AR-15 5.56 Magazine - Grey 30Rd E2
    Okay Industries SureFeed E2 AR-15 5.56 Magazine - Grey 30Rd E2
    $12.49
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  7. Griffin Armament Sig Sauer P365 Thread Barrel w/ Micro Carry Comp
    Griffin Armament Sig Sauer P365 Thread Barrel w/ Micro Carry Comp
    $186.00
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  8. Griffin Armament Smith and Wesson M&P Shield Threaded Barrel W/ Micro Carry Comp
    Griffin Armament Smith and Wesson M&P Shield Threaded Barrel W/ Micro Carry Comp
    $186.00
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  9. FOXTROT MIKE FM PRODUCTS AR-15 9MM PREMIUM COMPLETE LOWER (Rainier Arms Exclusive)
    FOXTROT MIKE FM PRODUCTS AR-15 9MM PREMIUM COMPLETE LOWER (Rainier Arms Exclusive)

    From $324.99

    To $409.99

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  10. Hera Arms CCS Collapsible Stock
    Hera Arms CCS Collapsible Stock
    As low as $59.90
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  11. SilencerCo Osprey/Octane Piston M16x1 RH
    SilencerCo Osprey/Octane Piston M16x1 RH
    $82.00
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  12. ARC Division Arc Sparc Glock Gen 5 9mm Compensator - FDE 1/2x28
    ARC Division Arc Sparc Glock Gen 5 9mm Compensator - FDE 1/2x28
    $92.00
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  13. Angstadt Arms UDP Series Handguard - 4"
    Angstadt Arms UDP Series Handguard - 4"
    $133.00
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  14. Sig Sauer P238 6RD .380ACP Magazine
    Sig Sauer P238 6RD .380ACP Magazine
    $37.99
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  15. Faxon Firearms Tapered AR-15 9MM Barrel w/ Integral Muzzle Brake - 16"
    Faxon Firearms Tapered AR-15 9MM Barrel w/ Integral Muzzle Brake - 16"
    $189.05
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  16. Faxon Firearms Tapered AR-15 9MM Barrel w/ Integral Flash Hider - 16"
    Faxon Firearms Tapered AR-15 9MM Barrel w/ Integral Flash Hider - 16"
    $189.05
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Firearm parts

Rainier Arms is the best place to purchase parts and accessories for your rifle or pistol online, and all that for more than affordable prices. Look no further, you can find here everything that comes to your mind and more! The best manufacturers in the business, like Killer Innovations, Lantac, Next Level Armament, Rainier Arms LLC, Apex Tactical Specialties, and many more are here to offer you their high-quality products. Select your preferred part and make your AR-10, AR-15 or pistol a unique piece of firearm.

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Shopping Options
Category
  1. AR15 Parts 1444 items
  2. AR10 Parts 350 items
  3. Pistol parts 834 items
Twist Rate
  1. 1:7 6 items
  2. 1:7.5 34 items
  3. 1:8 18 items
  4. 1:10 17 items
Material
  1. 416r SS 71 items
  2. 4150 CM 2 items
  3. CMV 1 item
Grade
  1. Match 14 items
  2. Mountain Mod 2 2 items
  3. Ultramatch Mod 1 3 items
  4. Ultramatch Mod 2 52 items
  5. Rock Creek 2 items
Thread Pattern
  1. 1/2 x 28 29 items
  2. 1/2 x 36 2 items
  3. 5/8 x 24 42 items
  4. Target Crown 5 items
Gas Block Diameter
  1. .625" 1 item
  2. .750" 17 items
  3. .800" 29 items
  4. .875" 13 items
  5. .936" 12 items
Threaded
  1. Yes 1 item
  2. No 1 item
Price
  1. -$1,000.00 - -$0.01 1 item
  2. $0.00 - $999.99 2724 items
  3. $1,000.00 - $1,999.99 88 items
  4. $2,000.00 - $2,999.99 17 items
  5. $3,000.00 - $3,999.99 6 items
  6. $4,000.00 and above 1 item
Color
  1. Gunmetal Gray Shoe/Black Safety 1 item
  2. Black 388 items
  3. Black Daimond 1 item
  4. Black Nitride 8 items
  5. Black Shoe/Black Safety 2 items
  6. Black Shoe/Red Safety 1 item
  7. Black/Black 6 items
  8. Black/Gray 6 items
  9. Black/Red 6 items
  10. Blue 13 items
  11. Bronze 3 items
  12. Burnt Bronze 2 items
  13. C4V 1 item
  14. Clear / Aluminum 1 item
  15. Coyote Brown 2 items
  16. Coyote Tan 4 items
  17. Desert Dirt Color 1 item
  18. DLC-TI 1 item
  19. EVO 2 items
  20. FDE/Black 3 items
  21. Flat Dark Earth 118 items
  22. Foliage Green 5 items
  23. Gold 41 items
  24. Gold/Black 3 items
  25. Gray 39 items
  26. Gray/Black 4 items
  27. Gray/Red 1 item
  28. Grey 37 items
  29. Gunmetal Gray Shoe/Red Safety 1 item
  30. Ion Bond Black 2 items
  31. Matt Stainless 1 item
  32. MDC Gray 2 items
  33. MultiCam 4 items
  34. OD Green 13 items
  35. Olive Drab 1 item
  36. Orange 9 items
  37. Orange/Black 3 items
  38. Orange/White 6 items
  39. Polished 1 item
  40. Ranger Green 2 items
  41. Raw 6 items
  42. Raw Satin Titanium 2 items
  43. Raw Titanium 2 items
  44. Red 102 items
  45. Red/Black 4 items
  46. Scorched Dark Earth 5 items
  47. Silver 12 items
  48. Stainless Bead Blast 1 item
  49. Stainless Steel 21 items
  50. Stealth Grey 3 items
  51. Tan 17 items
  52. Tungsten 1 item
  53. White/Black 6 items
  54. White/Blank 1 item
  55. White/White 1 item
  56. Yellow/Black 5 items
  57. War Torn Burnt Bronze 1 item
  58. Blue Titanium 1 item
  59. Battle Worn Bronze 2 items
  60. Black Camo 2 items
  61. DLC 5 items
  62. Battle Worn Green 1 item
  63. Blue Black Distress 1 item
  64. Green 2 items
  65. Stainless 2 items
  66. Tactical Gray 1 item
  67. Spectrum 3 items
  68. Copper 2 items
  69. Rose TiCN 2 items
  70. Stealth Gray 2 items
  71. Gold TiN 4 items
  72. Black DLC 4 items
  73. Yellow 7 items
  74. Blue/Black 1 item
Caliber
  1. .22 LR 5 items
  2. .22 Nosler 1 item
  3. .223 / 5.56 146 items
  4. .223 Rem 6 items
  5. .223 Wylde 14 items
  6. .224 Valkyrie 29 items
  7. .260 Rem 1 item
  8. .30 Cal 1 item
  9. .308 14 items
  10. .308 / 7.62 97 items
  11. .308 Win 4 items
  12. .45 ACP 15 items
  13. .450 Bushmaster 1 item
  14. 300AAC 45 items
  15. 40 S&W 1 item
  16. 5.56 82 items
  17. 6.5 Creedmoor 30 items
  18. 6.5 Grendel 13 items
  19. 6.8 SPC 1 item
  20. 6.8 SPC2 4 items
  21. 6MM Creedmoor 1 item
  22. 7.62 18 items
  23. 7.62x39 6 items
  24. 7.62x51 51 items
  25. 9/40/357 1 item
  26. 9mm 149 items
  27. 300 Blackout 2 items
Finish
  1. Black 117 items
  2. black 181 items
  3. Black DLC 31 items
  4. Black Ionbond 2 items
  5. Black Nitride 10 items
  6. Black/Gray 10 items
  7. Blue 4 items
  8. Bronze 19 items
  9. Bronze DLC 2 items
  10. C4V 1 item
  11. Carbon Fiber 1 item
  12. Chameleon 13 items
  13. Chrome 2 items
  14. Copper 5 items
  15. Copperhead 1 item
  16. DLC 17 items
  17. FDE 11 items
  18. FDE DLC 2 items
  19. Gold 14 items
  20. Gold TiN 4 items
  21. Gray 8 items
  22. Grey 11 items
  23. Grey DLC 8 items
  24. MDC (Gray) 12 items
  25. Melonite 5 items
  26. NeoChromatic 1 item
  27. Nickel Boron 3 items
  28. Nitride 19 items
  29. Phosphate 3 items
  30. Polished 35 items
  31. Raw 5 items
  32. RAW Ti 4 items
  33. Red 19 items
  34. Rose 3 items
  35. Rose Gold TiCN 4 items
  36. Satin 68 items
  37. Silver CrN 2 items
  38. Spectrum 8 items
  39. Stainless Steel 65 items
  40. Stealth Grey 8 items
  41. TiN (Gold) 41 items
  42. Titanium - Bead Blast 7 items
  43. Titanium - Polished 1 item
  44. Tungsten 5 items
  45. White 3 items
  46. Cobalt Grey 2 items
  47. Black Oxide 1 item
  48. Electroless Nickel Black 1 item
  49. Black/TiN 9 items
  50. Black/Black 9 items
  51. Black/Bronze 2 items
  52. Black/Stainless 2 items
  53. Black/Nickel 6 items
  54. Clear 5 items
  55. Tactical Grey 1 item
  56. Sand 1 item
  57. Battleworn 2 items
  58. Metallic Gray 1 item
  59. Black Nickel Teflon 2 items
  60. Black Anodize 1 item
  61. Gold Anodize 1 item
  62. Titan 1 item
  63. Aluminum 1 item
  64. Multi Color 2 items
  65. Orange 3 items
Profile
  1. Fluted 8 items
  2. Heavy 22 items
  3. Lightweight 2 items
  4. Medium Contour 45 items
  5. Mk18 1 item
  6. SDM 5 items
  7. SPR 4 items
  8. Standard 104 items
Barrel Length
  1. 4" 3 items
  2. 4.5" 2 items
  3. 5.5" 4 items
  4. 6" 3 items
  5. 6.5" 2 items
  6. 7" 2 items
  7. 7.5" 7 items
  8. 7.75" 1 item
  9. 8" 3 items
  10. 8.3" 1 item
  11. 8.5" 12 items
  12. 9" 3 items
  13. 10" 2 items
  14. 10.3" 23 items
  15. 10.5" 30 items
  16. 11" 1 item
  17. 11.5" 12 items
  18. 11.85" 2 items
  19. 12" 2 items
  20. 12.5" 6 items
  21. 12.75" 1 item
  22. 13.7" 1 item
  23. 14.1" 1 item
  24. 14.5" 22 items
  25. 14.82 1 item
  26. 16" 180 items
  27. 16.1" 2 items
  28. 16.5" 6 items
  29. 18" 121 items
  30. 18.5" 1 item
  31. 20" 31 items
  32. 22" 19 items
  33. 22.5" 1 item
  34. 24" 10 items
  35. 24.5" 1 item
  36. 26" 11 items
Gas Length
  1. Pistol 40 items
  2. Carbine - 1 1 item
  3. Carbine 24 items
  4. Mid 139 items
  5. Intermediate 88 items
  6. Rifle 57 items
  7. Rifle + 1 2 items
  8. Rifle + 2 27 items
  9. Rifle + 3 3 items
  10. AR15 Rifle 1 item
  11. AR15 Carbine 1 item
Size
  1. 35mm rings 13 items
  2. 5.5-inch (11 slot) 4 items
  3. BACK STRAP:Large 1 item
  4. BACK STRAP:Medium 2 items
  5. Medium 2 items
  6. Large 2 items
  7. X-Large 30 items
  8. 30mm 2 items
  9. 34mm 2 items
  10. 35mm 1 item
  11. 5" 1 item
  12. 6" 1 item
  13. 7.5" 1 item
  14. 3 Slot 1 item
  15. 5 Slot 6 items
  16. 7 Slot 2 items
  17. 9 Slot 102 items
  18. 11 Slot 1 item
  19. Size 7 1 item
Mount
  1. KeyMod 116 items
  2. M-LOK 67 items
  3. Other 6 items
  4. Picatinny 140 items
MOA
  1. 2 MOA 1 item
Co Witness
  1. Absolute 2 items
  2. Lower 1/3 3 items
Rail Length
  1. 10.5" 5 items
  2. 11.9" 1 item
  3. 12.5" 3 items
  4. 12.6" 2 items
  5. 13.5" 2 items
  6. 13.8" 2 items
  7. 14 5/8" 2 items
  8. 15.3" 2 items
  9. 16 5/8" 2 items
  10. 4.25" 2 items
  11. 4.44" 1 item
  12. 4.5" 2 items
  13. 4.75" 2 items
  14. 5.5" 2 items
  15. 6.44" 1 item
  16. 6.75" 1 item
  17. 9.2" 3 items
  18. 6.5" 4 items
  19. 6.7" 4 items
  20. 7" 30 items
  21. 13.5" 3 items
  22. 8" 4 items
  23. 9" 23 items
  24. 10" 92 items
  25. 9.5" 6 items
  26. 11" 5 items
  27. 12" 139 items
  28. 13" 14 items
  29. 13.7" 6 items
  30. 13.7" 2 items
  31. 14" 13 items
  32. 14.7" 2 items
  33. 15" 48 items
  34. 15.0" 7 items
  35. 15.5" 1 item
  36. 16" 9 items
  37. 16.5" 7 items
  38. 17" 7 items
  39. 17.25" 1 item
  40. 16.75" 2 items
  41. 18.5" 3 items
Reticle
  1. MOA 3 items
  2. MRAD 1 item
  3. Red Dot 1 item
Configuration
  1. .45 ACP 1 item
  2. 1/2X28 Thread 187 items
  3. 1/2X36 Thread 10 items
  4. 11/16X24 Thread 1 item
  5. 1st - 3rd Gen 2 items
  6. 4 Gen 3 items
  7. 5/8X24 Thread 105 items
  8. 9mm, .40, .357 1 item
  9. Add Folder 2 items
  10. AR-10 6 items
  11. AR-15 74 items
  12. California CQR 2 items
  13. Carbine 2 items
  14. Clamp on Piston Block 1 item
  15. Curve 4 items
  16. Curved 12 items
  17. Extended 3 items
  18. Flat 12 items
  19. Forward Assist 2 items
  20. Frag Black 2 items
  21. Frag-Silver 2 items
  22. G26 5 items
  23. Gen 3 16 items
  24. Gen 3 Glock 17/19/34 1 item
  25. Gen 4 9 items
  26. GEN 4/5 3 items
  27. Glock .40 Cal Gen1-3 1 item
  28. Glock .40 cal Gen4 1 item
  29. Glock 9mm Gen 1-3 1 item
  30. Glock 9mm Gen4 1 item
  31. Glock Gen 5 3 items
  32. Hash Black 1 item
  33. Honeycomb-Black 2 items
  34. KeyMod 3 items
  35. Large Backstrap 2 items
  36. Left Hand 2 items
  37. M-LOK 54 items
  38. Med Backstrap 2 items
  39. No Backstrap 2 items
  40. No Folder 2 items
  41. No Forward Assist 2 items
  42. Normal CQR 2 items
  43. PF940Cv1 Textured Grip 2 items
  44. Pistol 2 items
  45. Quantity 50 3 items
  46. Quantity 500 3 items
  47. Rifle 2 items
  48. Right Hand 1 item
  49. Solid Piston Block 1 item
  50. SRS-H3 5.6oz 1 item
  51. Standard 3 items
  52. Straight 6 items
  53. Textured Grip 1 item
  54. W/O Logo 1 item
  55. W/O Mount 1 item
  56. With Mount 1 item
  57. SRS-C 3.3oz 1 item
  58. SRS-H 3.8oz 1 item
  59. SRS-H2 4.7oz 1 item
  60. SRS-9.5 5.4oz 1 item
  61. .625 DIA 21 items
  62. .750 DIA 51 items
  63. .875 DIA 17 items
  64. .936 DIA 4 items
  65. .938 DIA 3 items
  66. Standard Mount 1 item
  67. Extended Mount 1 item
  68. V1 1 item
  69. V2 1 item
  70. G17 21 items
  71. G19 27 items
  72. G22 3 items
  73. G23 1 item
  74. G34 1 item
  75. G42 1 item
  76. G43 8 items
  77. Standard Buffer and Spring 2 items
  78. Silent Captured Spring 9mm 2 items
  79. Silent Captured Spring Heavy 2 items
  80. Silent Captured Spring Standard 2 items
  81. Gen 5 1 item
  82. Type 1 Trunnion 1 item
  83. Type 2 Trunnion 1 item
Option
  1. 5.45 Krinkov 1 item
  2. 9mm Buffer 2 items
  3. AK74 1 item
  4. AKM 1 item
  5. AMD65 1 item
  6. AR Pistol Caliber 3 items
  7. AR15 315 items
  8. Arsenal Rifle Large Bore 1 item
  9. Arsenal Rifle Small Bore 1 item
  10. Bulgarian 5.45 Krinkov 1 item
  11. Bulgarian AK74 1 item
  12. CZ Scorpion 1 item
  13. DRACO 1 item
  14. Fluted 3 items
  15. Galil Ace 1 item
  16. Galil SAR 1 item
  17. H1 Buffer 2 items
  18. LR 308/AR10 63 items
  19. M&P 15-22 1 item
  20. M76 1 item
  21. M85 1 item
  22. M92 1 item
  23. MLOK 1 item
  24. Non-Threaded 2 items
  25. PKM 1 item
  26. PSL 1 item
  27. RMR Cut 4 items
  28. SIG MPX/MCX 6 items
  29. Thordsen Customs Enhanced with Cheek Rest 1 item
  30. Threaded 2 items
  31. Valmet M76 Large Bore 1 item
  32. Valmet M76 Small Bore 1 item
  33. VEPR Large Bore 1 item
  34. VEPR, Small Bore 1 item
  35. W/ Butt Pad 2 items
  36. W/O Butt Pad 2 items
  37. With Trigger 1 item
  38. Without Trigger 1 item
  39. Standard 4 items
  40. 6lb 1 item
  41. Service W/ Adjustable Gas Blocks 2 items
  42. 6.5lb 1 item
  43. Accurizing 2 items
  44. 4lb 1 item
  45. G17 1 item
  46. G19 1 item
  47. 3.145" 2 items
  48. 4.720" 2 items
  49. 6.295" 2 items
  50. 7.870" 2 items
  51. 9.445" 2 items
  52. Multi Cut 4 items
  53. UDR 1 / M7M 15" 1 item
  54. UDR 2 / M7M 15" 1 item
  55. H2 Buffer 2 items
  56. H0 Buffer 2 items
  57. PCH Buffer 2 items
  58. Bull's Eye 1 item
  59. Diamond 1 item
  60. Vertical Lines 1 item
  61. Minimal 1 item
  62. V1 4 items
  63. V2 4 items
  64. V3 4 items
  65. V4 4 items
  66. DPMS Low 2 items
  67. DPMS High 2 items
  68. Armalite AR10/SR25 2 items
  69. 13lb 2 items
  70. 15lb 2 items
  71. 17lb 1 item
  72. White - Standard Power 1 item
  73. Blue - Enhanced Power 1 item
  74. Red - Extra Power 2 items
  75. Orange - Extra Extra Power 2 items
  76. Yellow - Reduced Power 1 item
  77. White/Red - Intermediate Power 1 item
  78. Green - Rifle Length Standard Power 1 item
  79. 18lb 1 item
  80. SRS-9mm 6.4 oz. 1 item
  81. SRS-H3 5.6 oz. 1 item
  82. SRS-C 3.3 oz. 1 item
  83. SRS-H 3.8 oz. 1 item
  84. SRS-H2 4.7 oz. 1 item
  85. 1/2X28 Thread 1 item
  86. 5/8X24 Thread 1 item
  87. 14X1 LH Thread 1 item
  88. Front 1 item
  89. Mid 1 item
  90. Rear 1 item
Manufacturer
  1. 108 Performance 13 items
  2. 2A Armament 14 items
  3. Accu-Tac 2 items
  4. Adams Arms 8 items
  5. Advanced Armament Corp 17 items
  6. Aero Precision 21 items
  7. Aeroknox 1 item
  8. Agency Arms 62 items
  9. Aguila Ammunition 1 item
  10. Aimpoint 3 items
  11. Aletheia Defense 1 item
  12. ALG Defense 4 items
  13. Alpha Foxtrot 1 item
  14. American Defense 2 items
  15. American Trigger Company 1 item
  16. Angstadt Arms 12 items
  17. ANR Design 1 item
  18. Apex Machining Company 6 items
  19. Apex Tactical Specialties 46 items
  20. ARC Division 9 items
  21. Arisaka 1 item
  22. Armalite 13 items
  23. Armaspec 9 items
  24. Arms Collective 2 items
  25. Arms Republic 8 items
  26. Arsenal 2 items
  27. Ascend Armory 32 items
  28. Atibal 9 items
  29. ATN 1 item
  30. ATX Armory 1 item
  31. B&T 1 item
  32. B5 Systems 1 item
  33. Backup Tactical 2 items
  34. Ballistic Advantage 22 items
  35. Battle Arms Development 57 items
  36. Battle Comp Enterprises 6 items
  37. Beta Company 1 item
  38. Blitzkrieg Components 11 items
  39. BLK LBL Bipod 9 items
  40. BOBRO 3 items
  41. Bootleg 7 items
  42. Brace Built 4 items
  43. Bravo Company MFG 59 items
  44. Breakthrough 6 items
  45. Brigand Arms 8 items
  46. BSF Barrels 24 items
  47. CAA 8 items
  48. Caracal 2 items
  49. CAT Outdoors 4 items
  50. Centurion Arms 10 items
  51. Cloud Defensive 2 items
  52. CMC Triggers 17 items
  53. CMT 33 items
  54. Concealed Concept Weaponry 1 item
  55. C Products Defense 3 items
  56. CR Precision 2 items
  57. Daniel Defense 19 items
  58. Danger Close Armament 9 items
  59. Dark Hour Defense 9 items
  60. Dead Air Armament 2 items
  61. Dead Foot Arms LLC 1 item
  62. Defiance by KRISS USA 4 items
  63. Devil Dog Concepts 5 items
  64. Dewey Rods 7 items
  65. DPMS 5 items
  66. DPM Systems Technologies 15 items
  67. Elftmann Tactical 4 items
  68. Elite Tactical Systems (ETS) 51 items
  69. Elzetta Design LLC 10 items
  70. F1 Firearms 39 items
  71. F4 Defense 1 item
  72. F5 MFG 1 item
  73. Faxon Firearms 82 items
  74. Fightlite 1 item
  75. FNH USA 1 item
  76. FoldAR 2 items
  77. Fortis MFG 56 items
  78. Forward Controls Design 17 items
  79. Foxtrot Mike 2 items
  80. Franklin Armory 1 item
  81. Full Conceal 1 item
  82. Gear Head Works 1 item
  83. Gear Sector 1 item
  84. Geissele 34 items
  85. GEMTECH 2 items
  86. Gibbz Arms 9 items
  87. Gill Arm Lock 1 item
  88. Glock 45 items
  89. Glockstore 1 item
  90. GoGun USA 1 item
  91. Grayguns 16 items
  92. Grey Ghost Precision 29 items
  93. Grey Ghost Gear 2 items
  94. Griffin Armament 27 items
  95. Griffon Industries 3 items
  96. GSSA 1 item
  97. Gun Point 1 item
  98. Gun Pro 3 items
  99. Guncrafter Industries 2 items
  100. HB Industries 4 items
  101. Heavy Buffer 1 item
  102. Heckler & Koch 11 items
  103. HERA ARMS 19 items
  104. Hexmag 3 items
  105. High Velocity Arms 2 items
  106. Hiperfire 10 items
  107. Inforce 5 items
  108. Iron City Rifle Works 18 items
  109. IWI 4 items
  110. JL Billet 1 item
  111. JMT 2 items
  112. JP Enterprises Inc 20 items
  113. JMAC Customs 7 items
  114. KAK Industries 1 item
  115. Kaiser US 3 items
  116. Kagwerks 1 item
  117. KCI USA 1 item
  118. Killer Innovations 36 items
  119. Kinetic Development Group 4 items
  120. KNS Precision 5 items
  121. KRISS 5 items
  122. K Rounds LLC 12 items
  123. Krytos Industries 1 item
  124. KynSHOT 4 items
  125. L2D Combat 27 items
  126. Lancer Systems 10 items
  127. Lantac 40 items
  128. Lead Star Arms 9 items
  129. LUTH-AR 1 item
  130. Low-Pro 2 items
  131. Legion Precision 2 items
  132. LWRC International 1 item
  133. Madison Custom 3 items
  134. Magpul Industries 71 items
  135. Master Of Arms 6 items
  136. Maxim Defense 5 items
  137. Mega Arms 1 item
  138. Mil-Comm 8 items
  139. Midwest Industries 1 item
  140. Mission First Tactical 7 items
  141. Modular Evolution LLC 1 item
  142. Mirzon 1 item
  143. Mid-Evil 6 items
  144. Mean Arms 1 item
  145. Multitasker Tools 1 item
  146. MVB Industries 12 items
  147. Neomag 3 items
  148. Next Level Armament 25 items
  149. NIGHT FISION 29 items
  150. Nighthawk Custom 9 items
  151. Nikon 1 item
  152. Nomad Defense 2 items
  153. Norgon 1 item
  154. New Frontier Armory 3 items
  155. NEMO Arms 16 items
  156. Norsso 14 items
  157. Noveske 67 items
  158. Odin Works 23 items
  159. Otis Technologies 2 items
  160. Overwatch Precision 6 items
  161. Okay Industries 3 items
  162. Pakse Development 1 item
  163. Patriot Ordnance Factory 7 items
  164. Phase 5 Tactical 16 items
  165. Pioneer CNC 2 items
  166. Polymer80 21 items
  167. Praetor Defense 1 item
  168. Precision Armament 15 items
  169. Primary Arms 6 items
  170. Primary Weapon Systems 22 items
  171. Proof Research 14 items
  172. Quarter Circle 10 11 items
  173. Radian Weapons 15 items
  174. Rainier Arms, LLC 139 items
  175. Rainier Munitions 6 items
  176. Reptilia Corp 1 item
  177. Rise Armament 8 items
  178. Rock River Arms 1 item
  179. Rubber City Armory 1 item
  180. Ruger 1 item
  181. Rainier Arms Barrels 77 items
  182. S3FSolutions 1 item
  183. San Tan Tactical 9 items
  184. SB Tactical 5 items
  185. SCALARWORKS 2 items
  186. Seekins Precision 25 items
  187. Sharps Bros 14 items
  188. Sharps Rifle Co 1 item
  189. Shooters element 2 items
  190. Shooting Innovations 7 items
  191. Sig Sauer 62 items
  192. Silencerco 12 items
  193. Simplistic Shooting Solutions 1 item
  194. SLR Rifleworks 21 items
  195. Smith & Wesson 5 items
  196. Smith Enterprises 1 item
  197. Smoke Composites 4 items
  198. Southern Grind 3 items
  199. Sphinx Arms 3 items
  200. Springer Precision 20 items
  201. Squared Away Customs 1 item
  202. Stag Arms 5 items
  203. Stern Defense 6 items
  204. Strike Industries 68 items
  205. Superlative Arms 5 items
  206. Surefire 16 items
  207. Schmeisser 5 items
  208. Sprinco (Tactical Springs) 7 items
  209. Stark 1 item
  210. Statement Defense 28 items
  211. Swiss CNC 1 item
  212. Tactical Link 2 items
  213. Tactical Kinetics 14 items
  214. Tactical Solutions 12 items
  215. Tactical Tailor 4 items
  216. Tactical Walls 1 item
  217. Tango Down 1 item
  218. Taran Tactical Innovations 3 items
  219. Taylor Freelance 8 items
  220. Texas Black Rifle Company 1 item
  221. Thordsen Customs 1 item
  222. Timney 11 items
  223. TorkMag 1 item
  224. Torrent Suppressors 2 items
  225. Triggertech 5 items
  226. Trijicon 21 items
  227. Trojan Firearms 1 item
  228. Troy Industries 6 items
  229. True North Concepts 1 item
  230. True Precision 16 items
  231. Tyrant Designs 34 items
  232. Umbrella Corporation 2 items
  233. V7 Weapon Systems 54 items
  234. Vella Industries 11 items
  235. Venom Defense 7 items
  236. VG6 Precision 12 items
  237. VLTOR 8 items
  238. Vortex Optics 15 items
  239. Weapons Armament Research 4 items
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  242. Yankee Hill Machine 8 items
  243. Young MFG 15 items
  244. Zenith Firearms 2 items
  245. ZEV Tech 64 items
  246. ZRODelta 3 items
Product Type
  1. AR-15 Rifle 1 item
  2. AR-15 Part 81 items
  3. AR-15 Lower/Upper Combo 17 items
  4. AR-15 Lower Receiver 8 items
  5. AR-15 Complete Lower Receiver 8 items
  6. AR-15 Stripped Lower Receiver 27 items
  7. AR-15 Upper Receiver 10 items
  8. AR-15 Stripped Upper Receiver 8 items
  9. AR-15 Charging Handle 9 items
  10. AR-15 Handguard 25 items
  11. AR-15 Muzzle Device 6 items
  12. AR-10 Rifle 7 items
  13. AR-10 Part 38 items
  14. AR-10 / LR 308 Charging Handle 1 item
  15. AR-10 Lower/Upper Combo 3 items
  16. Barrel 132 items
  17. AR Pistol 1 item
  18. AR Pistol accessory 1 item
  19. Lower 2 items
  20. Upper 4 items
  21. Ammunition 6 items
  22. 9mm Pistol 2 items
  23. Muzzle Brake 4 items
  24. Bipod Adapter 3 items
  25. Pistol Silencer 1 item
  26. AR-15 Replacement Part 2 items
  27. Slide 52 items
  28. Trigger 30 items
Stock Status
  1. In stock 1661 items
  2. Out of stock 1188 items
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What are the most common barrel thread patterns for pistols and rifles?

For .22LR, .22MAG, .17HMR, 9mm, and .223/5.56 NATO the most common thread pattern would be 1/2x28, with some exceptions for 9mm and .223/5.56 NATO firearms. As for .308/7.62mm and .338 Lapua Magnum, the thread pattern that is most commonly used is 5/8x24, with a few exceptions. Another typical thread pattern is 9/16x24 and it is mostly used for .40 S&W weapons.

Single triggers or two-stage triggers?

Whichever you choose, you cannot go wrong. The single trigger is fast and simple to use; as soon as you apply a small amount of pressure, the firearm goes off. Two-stage trigger is extremely accurate and you know precisely when the shot is going to be fired. The first stage prepares you for the second one, when the trigger pushes the hammer up causing the firearm to discharge. So, it is up to you to make a choice.