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Parts

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. MEGA Arms AR15 Billet Ambi Lower Receiver - GTR-3S
    MEGA Arms AR15 Billet Ambi Lower Receiver - GTR-3S
    $232.75
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  2. Iron City Rifle Works AR-9/PCC TYR 1 Receiver Set - Black
    Iron City Rifle Works AR-9/PCC TYR 1 Receiver Set - Black
    $509.99
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  3. Iron City Rifle Works AR-15 TYR 1 Receiver Set - Black
    Iron City Rifle Works AR-15 TYR 1 Receiver Set - Black
    $479.99
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  4. Killer Innovations Sig P320C Velocity Non-Threaded Barrel
    Killer Innovations Sig P320C Velocity Non-Threaded Barrel
    As low as $209.99
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  5. Killer Innovations Sig P320C Velocity Threaded Barrel
    Killer Innovations Sig P320C Velocity Threaded Barrel
    As low as $229.99
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  6. Killer Innovations Sig P320 Compensator
    Killer Innovations Sig P320 Compensator
    As low as: $112.49
    Out of stock
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  7. Killer Innovations Sig P320X Magwell
    Killer Innovations Sig P320X Magwell
    As low as $75.99
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  8. Killer Innovations Sig P320 +5 Magazine Extension
    Killer Innovations Sig P320 +5 Magazine Extension
    As low as $47.49
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  9. Killer Innovations Sig P320 Base Plate
    Killer Innovations Sig P320 Base Plate
    As low as $30.39
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  10. Carbine 9mm Buffer - 5.4OZ
    Carbine 9mm Buffer - 5.4OZ
    $20.99
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  11. Sig Sauer P320 X-Series Carry Medium Grip Module - 9mm, .357 SIG, .40Auto
    Sig Sauer P320 X-Series Carry Medium Grip Module - 9mm, .357 SIG, .40Auto
    $53.99
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  12. Polymer80 PF320 Grip Module
    Polymer80 PF320 Grip Module
    As low as $55.00
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  13. Rainier Arms Select 5.56 NATO Barrel - 7.5" Satin (Non-Fluted)
    Rainier Arms Select 5.56 NATO Barrel - 7.5" Satin (Non-Fluted)
    $155.00
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  14. Zev Technologies Optimized Match Grade G17 Gen 5 1/2x28 Threaded Barrel - DLC
    Zev Technologies Optimized Match Grade G17 Gen 5 1/2x28 Threaded Barrel - DLC
    $274.55
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  15. Tyrant Designs Glock Extended Slide Release Gen 2-4 (Pre-Order)
    Tyrant Designs Glock Extended Slide Release Gen 2-4 (Pre-Order)
    As low as: $26.55
    Out of stock
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  16. Rainier Arms Match 6MM Creedmoor Barrel - 22" Satin (Non-Fluted)
    Rainier Arms Match 6MM Creedmoor Barrel - 22" Satin (Non-Fluted)
    $255.00
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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.

Shop By
Shopping Options
Category
  1. AR15 Parts 1438 items
  2. AR10 Parts 350 items
  3. Pistol parts 868 items
Twist Rate
  1. 1:7 6 items
  2. 1:7.5 23 items
  3. 1:8 18 items
  4. 1:10 10 items
Material
  1. 416r SS 51 items
  2. 4150 CM 4 items
  3. CMV 1 item
Grade
  1. Match 14 items
  2. Mountain Mod 1 2 items
  3. Mountain Mod 2 3 items
  4. Ultramatch Mod 1 3 items
  5. Ultramatch Mod 2 34 items
Thread Pattern
  1. 1/2 x 28 23 items
  2. 1/2 x 36 2 items
  3. 5/8 x 24 31 items
  4. Target Crown 2 items
Gas Block Diameter
  1. .625" 1 item
  2. .750" 17 items
  3. .800" 16 items
  4. .875" 12 items
  5. .936" 8 items
Slide Finish
  1. DLC Black 1 item
Threaded
  1. Yes 2 items
  2. No 2 items
Price
  1. -$1,000.00 - -$0.01 1 item
  2. $0.00 - $999.99 2775 items
  3. $1,000.00 - $1,999.99 84 items
  4. $2,000.00 - $2,999.99 15 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 409 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 8 items
  8. Black/Gray 5 items
  9. Black/Red 8 items
  10. Blue 25 items
  11. Bronze 2 items
  12. Burnt Bronze 2 items
  13. C4V 1 item
  14. Clear / Aluminum 1 item
  15. Cobalt 1 item
  16. Coyote Brown 2 items
  17. Coyote Tan 4 items
  18. Desert Dirt Color 1 item
  19. DLC-TI 1 item
  20. EVO 2 items
  21. FDE/Black 2 items
  22. Flat Dark Earth 126 items
  23. Foliage Green 4 items
  24. Gold 51 items
  25. Gold/Black 2 items
  26. Gray 44 items
  27. Gray/Black 3 items
  28. Gray/Red 1 item
  29. Grey 41 items
  30. Gunmetal Gray Shoe/Red Safety 1 item
  31. Ion Bond Black 2 items
  32. Matt Stainless 1 item
  33. MDC Gray 2 items
  34. MultiCam 4 items
  35. OD Green 19 items
  36. Olive Drab 1 item
  37. Orange 12 items
  38. Orange/Black 4 items
  39. Orange/White 6 items
  40. Ranger Green 2 items
  41. Raw 7 items
  42. Raw Satin Titanium 2 items
  43. Raw Titanium 2 items
  44. Red 116 items
  45. Red/Black 5 items
  46. Scorched Dark Earth 7 items
  47. Silver 13 items
  48. Stainless Steel 21 items
  49. Stealth Grey 3 items
  50. Tan 20 items
  51. Tungsten 3 items
  52. White/Black 6 items
  53. White/Blank 1 item
  54. White/White 1 item
  55. Yellow/Black 4 items
  56. War Torn Burnt Bronze 1 item
  57. Battle Worn Bronze 1 item
  58. DLC 3 items
  59. Green 1 item
  60. Stainless 2 items
  61. Tactical Gray 1 item
  62. Spectrum 3 items
  63. Copper 2 items
  64. Rose TiCN 2 items
  65. Stealth Gray 2 items
  66. Gold TiN 4 items
  67. Black DLC 2 items
  68. White 2 items
  69. Yellow 7 items
  70. Blue/Black 2 items
  71. Titan 2 items
  72. Nickel 1 item
  73. Barrett Brown 2 items
  74. Sniper Grey 2 items
  75. Crushed Orchid 1 item
  76. Aluminum 1 item
Caliber
  1. .22 LR 5 items
  2. .22 Nosler 1 item
  3. .223 Rem 6 items
  4. .223 Wylde 14 items
  5. .224 Valkyrie 21 items
  6. .260 Rem 1 item
  7. .30 Cal 1 item
  8. .308 15 items
  9. .308 Win 2 items
  10. .45 ACP 16 items
  11. .450 Bushmaster 1 item
  12. 300BLK 41 items
  13. 40 S&W 1 item
  14. 5.56 83 items
  15. 6.5 Creedmoor 30 items
  16. 6.5 Grendel 15 items
  17. 6.8 SPC 1 item
  18. 6.8 SPC2 3 items
  19. 6MM Creedmoor 2 items
  20. 7.62x39 6 items
  21. 7.62x51 49 items
  22. 9mm 152 items
  23. 22 Creedmoor 1 item
Finish
  1. Black 116 items
  2. black 173 items
  3. Black DLC 31 items
  4. Black Nitride 11 items
  5. Black/Gray 10 items
  6. Blue 4 items
  7. Bronze 26 items
  8. Bronze DLC 2 items
  9. Burnt Bronze 1 item
  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 24 items
  17. FDE 11 items
  18. FDE DLC 2 items
  19. Gold 14 items
  20. Gold TiN 4 items
  21. Gray 7 items
  22. Grey 10 items
  23. Grey DLC 8 items
  24. MDC (Gray) 14 items
  25. Melonite 5 items
  26. NeoChromatic 1 item
  27. Nickel Boron 3 items
  28. Nitride 24 items
  29. Phosphate 3 items
  30. Polished 24 items
  31. Raw 5 items
  32. RAW Ti 3 items
  33. Red 17 items
  34. Rose 3 items
  35. Rose Gold TiCN 4 items
  36. Satin 60 items
  37. Silver CrN 2 items
  38. Spectrum 7 items
  39. Stainless Steel 62 items
  40. Stealth Grey 8 items
  41. TiN (Gold) 42 items
  42. Titanium - Bead Blast 1 item
  43. Tungsten 5 items
  44. White 3 items
  45. Cobalt Grey 2 items
  46. Black Oxide 1 item
  47. Electroless Nickel Black 1 item
  48. Black/TiN 9 items
  49. Black/Black 9 items
  50. Black/Bronze 2 items
  51. Black/Stainless 2 items
  52. Black/Nickel 6 items
  53. Clear 5 items
  54. Tactical Grey 1 item
  55. Sand 1 item
  56. Battleworn 2 items
  57. Metallic Gray 1 item
  58. Black Nickel Teflon 2 items
  59. Black Anodize 1 item
  60. Gold Anodize 1 item
  61. Titan 1 item
  62. Aluminum 1 item
  63. Multi Color 2 items
  64. Orange 3 items
  65. NiB-X 6 items
  66. Nitromet 6 items
Profile
  1. Fluted 8 items
  2. Heavy 16 items
  3. Lightweight 2 items
  4. Medium Contour 30 items
  5. Mk18 1 item
  6. SDM 5 items
  7. SPR 4 items
  8. Standard 102 items
Barrel Length
  1. 4" 3 items
  2. 4.5" 2 items
  3. 5.5" 3 items
  4. 6" 3 items
  5. 6.5" 2 items
  6. 7" 3 items
  7. 7.5" 9 items
  8. 7.75" 1 item
  9. 8" 2 items
  10. 8.3" 1 item
  11. 8.5" 13 items
  12. 9" 3 items
  13. 10" 2 items
  14. 10.3" 19 items
  15. 10.5" 30 items
  16. 11" 1 item
  17. 11.5" 11 items
  18. 11.85" 2 items
  19. 12" 2 items
  20. 12.5" 7 items
  21. 12.75" 1 item
  22. 13.7" 1 item
  23. 14.1" 1 item
  24. 14.5" 22 items
  25. 14.8" 2 items
  26. 14.82 1 item
  27. 16" 173 items
  28. 16.1" 2 items
  29. 16.5" 6 items
  30. 18" 111 items
  31. 18.5" 1 item
  32. 20" 29 items
  33. 22" 19 items
  34. 22.5" 1 item
  35. 24" 10 items
  36. 24.5" 1 item
  37. 26" 7 items
Gas Length
  1. Pistol 41 items
  2. Carbine - 1 1 item
  3. Carbine 27 items
  4. Mid 140 items
  5. Intermediate 83 items
  6. Rifle 55 items
  7. Rifle + 1 1 item
  8. Rifle + 2 27 items
Size
  1. 35mm rings 12 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 7 items
  16. 7 Slot 2 items
  17. 9 Slot 98 items
  18. 11 Slot 1 item
  19. Size 7 1 item
Mount
  1. KeyMod 112 items
  2. M-LOK 67 items
  3. Other 6 items
  4. Picatinny 132 items
MOA
  1. 2 MOA 1 item
Co Witness
  1. Absolute 2 items
  2. Lower 1/3 3 items
Rail Length
  1. 10.5" 4 items
  2. 11.9" 1 item
  3. 12.5" 2 items
  4. 12.6" 3 items
  5. 13.5" 3 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" 22 items
  24. 10" 91 items
  25. 9.5" 7 items
  26. 11" 6 items
  27. 12" 129 items
  28. 13" 14 items
  29. 13.7" 6 items
  30. 13.7" 2 items
  31. 14" 9 items
  32. 14.7" 2 items
  33. 15" 49 items
  34. 15.0" 7 items
  35. 15.5" 1 item
  36. 16" 7 items
  37. 16.5" 7 items
  38. 17" 9 items
  39. 17.25" 1 item
  40. 16.75" 2 items
  41. 18.5" 3 items
Height
  1. High 1 item
Reticle
  1. MOA 3 items
  2. MRAD 1 item
  3. Red Dot 1 item
Configuration
  1. .45 ACP 1 item
  2. 1/2X28 Thread 186 items
  3. 1/2X36 Thread 11 items
  4. 11/16X24 Thread 1 item
  5. 1st - 3rd Gen 2 items
  6. 4 Gen 3 items
  7. 5/8X24 Thread 109 items
  8. 9mm, .40, .357 1 item
  9. Add Folder 2 items
  10. AR-10 6 items
  11. AR-15 72 items
  12. California CQR 2 items
  13. Carbine 2 items
  14. Clamp on Piston Block 1 item
  15. Curve 4 items
  16. Curved 14 items
  17. Extended 3 items
  18. Flat 14 items
  19. Forward Assist 2 items
  20. Frag Black 2 items
  21. Frag-Silver 2 items
  22. G26 5 items
  23. Gen 3 15 items
  24. Gen 3 Glock 17/19/34 1 item
  25. Gen 4 8 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 5 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 22 items
  71. G19 26 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 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 304 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 2 items
  15. Galil Ace 1 item
  16. Galil SAR 1 item
  17. H1 Buffer 2 items
  18. LR 308/AR10 61 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 8 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 7 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 2 items
  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. H2 Buffer 2 items
  54. H0 Buffer 2 items
  55. PCH Buffer 2 items
  56. Bull's Eye 1 item
  57. Diamond 1 item
  58. Vertical Lines 1 item
  59. Minimal 1 item
  60. V1 6 items
  61. V2 6 items
  62. V3 5 items
  63. V4 5 items
  64. DPMS Low 2 items
  65. DPMS High 2 items
  66. Armalite AR10/SR25 2 items
  67. 13lb 2 items
  68. 15lb 2 items
  69. 17lb 1 item
  70. White - Standard Power 1 item
  71. Blue - Enhanced Power 1 item
  72. Red - Extra Power 2 items
  73. Orange - Extra Extra Power 2 items
  74. Yellow - Reduced Power 1 item
  75. White/Red - Intermediate Power 1 item
  76. Green - Rifle Length Standard Power 1 item
  77. 18lb 1 item
  78. SRS-9mm 6.4 oz. 1 item
  79. SRS-308 1 item
  80. SRS-H3 5.6 oz. 1 item
  81. SRS-C 3.3 oz. 1 item
  82. SRS-H 3.8 oz. 1 item
  83. SRS-H2 4.7 oz. 1 item
  84. 1/2X28 Thread 1 item
  85. 5/8X24 Thread 1 item
  86. 14X1 LH Thread 1 item
  87. Front 1 item
  88. Mid 1 item
  89. Rear 1 item
  90. WA 1 item
  91. KS 1 item
Manufacturer
  1. 108 Performance 13 items
  2. 2A Armament 14 items
  3. Accu-Tac 2 items
  4. Adams Arms 4 items
  5. Advanced Armament Corp 17 items
  6. Aero Precision 19 items
  7. Aeroknox 1 item
  8. Agency Arms 61 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. Amend2 2 items
  15. American Defense 2 items
  16. American Trigger Company 1 item
  17. Angstadt Arms 12 items
  18. ANR Design 1 item
  19. Apex Machining Company 5 items
  20. Apex Tactical Specialties 48 items
  21. ARC Division 9 items
  22. Arisaka 1 item
  23. Armalite 11 items
  24. Armaspec 10 items
  25. Arms Collective 2 items
  26. Arms Republic 10 items
  27. Arsenal 3 items
  28. Ascend Armory 13 items
  29. Atibal 10 items
  30. ATN 1 item
  31. ATX Armory 1 item
  32. B&T 1 item
  33. B5 Systems 1 item
  34. Backup Tactical 2 items
  35. Ballistic Advantage 22 items
  36. Battle Arms Development 51 items
  37. Battle Comp Enterprises 6 items
  38. Beta Company 1 item
  39. Blitzkrieg Components 11 items
  40. BLK LBL Bipod 9 items
  41. BOBRO 3 items
  42. Bootleg 9 items
  43. Brace Built 4 items
  44. Bravo Company MFG 65 items
  45. Breakthrough 6 items
  46. Brigand Arms 8 items
  47. BSF Barrels 24 items
  48. CAA 10 items
  49. CAT Outdoors 4 items
  50. Centurion Arms 11 items
  51. Cloud Defensive 2 items
  52. CMC Triggers 18 items
  53. Concealed Concept Weaponry 2 items
  54. C Products Defense 3 items
  55. CR Precision 2 items
  56. Cross Machine Tool (CMT) 34 items
  57. Daniel Defense 17 items
  58. Danger Close Armament 12 items
  59. Dark Hour Defense 9 items
  60. Dead Air Armament 2 items
  61. Defiance by KRISS USA 4 items
  62. Devil Dog Concepts 5 items
  63. Dewey Rods 7 items
  64. DK Custom Coatings 2 items
  65. DPMS 5 items
  66. DPM Systems Technologies 16 items
  67. Elftmann Tactical 7 items
  68. Elite Tactical Systems (ETS) 51 items
  69. Elzetta Design LLC 8 items
  70. F1 Firearms 37 items
  71. F4 Defense 4 items
  72. F5 MFG 1 item
  73. Faxon Firearms 83 items
  74. Fightlite 1 item
  75. FNH USA 1 item
  76. FoldAR 2 items
  77. Fortis MFG 52 items
  78. Forward Controls Design 17 items
  79. Foxtrot Mike 3 items
  80. Franklin Armory 2 items
  81. Full Conceal 2 items
  82. Gear Head Works 3 items
  83. Gear Sector 1 item
  84. Geissele 35 items
  85. GEMTECH 2 items
  86. Gibbz Arms 9 items
  87. Gill Arm Lock 1 item
  88. Glock 48 items
  89. Glockstore 1 item
  90. GoGun USA 1 item
  91. Grayguns 19 items
  92. Grey Ghost Precision 37 items
  93. Grey Ghost Gear 2 items
  94. Griffin Armament 29 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 21 items
  104. Hexmag 3 items
  105. High Velocity Arms 2 items
  106. Hiperfire 10 items
  107. Inforce 5 items
  108. Ion Productions Team 1 item
  109. Iron City Rifle Works 20 items
  110. IWI 4 items
  111. James Madison Tactical (JMT) 2 items
  112. JL Billet 1 item
  113. JP Enterprises Inc 20 items
  114. JMAC Customs 7 items
  115. KAK Industries 1 item
  116. Kaiser US 1 item
  117. Kagwerks 1 item
  118. KCI USA 2 items
  119. Killer Innovations 41 items
  120. Kinetic Development Group 4 items
  121. KNS Precision 5 items
  122. KRISS 5 items
  123. K Rounds LLC 12 items
  124. KynSHOT 4 items
  125. L2D Combat 27 items
  126. Lancer Systems 10 items
  127. Lantac 38 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 4 items
  134. Magpul Industries 69 items
  135. Master Of Arms 6 items
  136. Maxim Defense 6 items
  137. Mega Arms 8 items
  138. Mil-Comm 8 items
  139. Mission First Tactical 8 items
  140. Modular Evolution LLC 1 item
  141. Mirzon 1 item
  142. Mid-Evil 6 items
  143. Mean Arms 1 item
  144. Mesa Tactical 7 items
  145. Multitasker Tools 1 item
  146. MVB Industries 12 items
  147. Neomag 3 items
  148. Next Level Armament 25 items
  149. NIGHT FISION 30 items
  150. Nighthawk Custom 10 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 12 items
  157. Noveske 66 items
  158. Odin Works 25 items
  159. Otis Technologies 2 items
  160. Overwatch Precision 6 items
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  162. Pakse Development 1 item
  163. Patriot Ordnance Factory (POF) 9 items
  164. Phase 5 Tactical 16 items
  165. Pioneer CNC 4 items
  166. Polymer80 22 items
  167. Praetor Defense 1 item
  168. Precision Armament 16 items
  169. Primary Arms 6 items
  170. Primary Weapon Systems 22 items
  171. Proof Research 14 items
  172. Quarter Circle 10 13 items
  173. Radian Weapons 14 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 57 items
  182. San Tan Tactical 9 items
  183. SB Tactical 11 items
  184. SCALARWORKS 3 items
  185. Seekins Precision 25 items
  186. Sharps Bros 14 items
  187. Sharps Rifle Co 1 item
  188. Shooters element 2 items
  189. Shooting Innovations 7 items
  190. Sig Sauer 59 items
  191. Silencerco 11 items
  192. Simplistic Shooting Solutions 1 item
  193. SLR Rifleworks 21 items
  194. Smith & Wesson 5 items
  195. Smoke Composites 4 items
  196. Southern Grind 3 items
  197. Sphinx Arms 3 items
  198. Springer Precision 20 items
  199. Squared Away Customs 1 item
  200. Stag Arms 5 items
  201. Stern Defense 6 items
  202. Strike Industries 76 items
  203. Superlative Arms 5 items
  204. Surefire 16 items
  205. Schmeisser 5 items
  206. Smartmag 1 item
  207. Sons of Liberty Gun Works 5 items
  208. Sprinco (Tactical Springs) 7 items
  209. Stark 1 item
  210. Statement Defense 8 items
  211. Swiss CNC 1 item
  212. Tactical Link 2 items
  213. Tactical Kinetics 15 items
  214. Tactical Solutions 13 items
  215. Tactical Tailor 4 items
  216. Tango Down 1 item
  217. Taran Tactical Innovations 3 items
  218. Taylor Freelance 8 items
  219. Texas Black Rifle Company 1 item
  220. Thordsen Customs 1 item
  221. Timney 12 items
  222. TorkMag 1 item
  223. Torrent Suppressors 2 items
  224. Triggertech 5 items
  225. Trijicon 21 items
  226. Trojan Firearms 1 item
  227. Troy Industries 6 items
  228. True North Concepts 1 item
  229. True Precision 19 items
  230. Tyrant Designs 38 items
  231. Umbrella Corporation 2 items
  232. V7 Weapon Systems 54 items
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  234. Venom Defense 7 items
  235. VG6 Precision 12 items
  236. VLTOR 8 items
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  238. 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 73 items
  246. ZRODelta 3 items
Product Type
  1. AR-15 Part 91 items
  2. AR-15 Lower/Upper Combo 19 items
  3. AR-15 Lower Receiver 9 items
  4. AR-15 Complete Lower Receiver 8 items
  5. AR-15 Stripped Lower Receiver 29 items
  6. AR-15 Upper Receiver 9 items
  7. AR-15 Stripped Upper Receiver 11 items
  8. AR-15 Charging Handle 10 items
  9. AR-15 Handguard 24 items
  10. AR-15 Muzzle Device 7 items
  11. AR-10 Rifle 6 items
  12. AR-10 Part 45 items
  13. AR-10 Lower/Upper Combo 4 items
  14. Stripped Lower Receiver 1 item
  15. Barrel 164 items
  16. AR Pistol 1 item
  17. AR Pistol accessory 1 item
  18. AK-47/74 Rifle 1 item
  19. Lower 2 items
  20. Upper 4 items
  21. Ammunition 6 items
  22. Shotgun accessory 7 items
  23. 9mm Pistol 2 items
  24. Muzzle Brake 4 items
  25. Bipod Adapter 3 items
  26. Pistol Silencer 1 item
  27. AR-15 Replacement Part 1 item
  28. Slide 56 items
  29. Trigger 35 items
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  1. In stock 1511 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.