Loading...

Please wait...

Pursue Your Passion
My Cart

Discord

Menu
Account

Rifle Parts

Whether you're building a new rifle from scratch or looking to upgrade an existing firearm, our vast selection of rifle parts has everything you are going to need in that journey. At Rainier Arms' selection of rifle parts, you can find a wide variety of products including lower and upper parts, trigger parts, muzzle devices, and many more. 

Explore our selection of high-quality parts coming from various leading manufacturers like Strike Industries, Magpul, BCM, and many more.

Also, don't forget to check our specially-made Rainier Arms barrels for your firearms.

Dark mode is

View as Grid List

Items 1-16 of 2383

Page
per page
  1. Maxim Defense M-RAX Attachment Rail - FDE
    Maxim Defense M-RAX Attachment Rail - FDE
    $37.76 - $61.16
    View Details
  2. Maxim Defense M-RAX Attachment Rail - Black
    Maxim Defense M-RAX Attachment Rail - Black
    $35.96 - $60.26
    View Details
  3. Rainier Arms AR-15 Precision Match Grade BCG - Nitride
    Rainier Arms AR-15 Precision Match Grade BCG - Nitride
    $169.95
    View Details
  4. Sharps Bros THE JACK AR-15 Lower Receiver - Gen 2
    Sharps Bros THE JACK AR-15 Lower Receiver - Gen 2
    $275.45
    View Details
  5. Sharps Bros Warthog AR-15 Lower Receiver - Gen 2
    Sharps Bros Warthog AR-15 Lower Receiver - Gen 2
    $265.95
    View Details
  6. Bravo Company MFG (BCM) MK2 Receiver Extension
    Bravo Company MFG (BCM) MK2 Receiver Extension
    $49.95
    View Details
  7. Next Level Armament NLX-8NS 7.62/.308 Comp / Flash Suppressor
    Next Level Armament NLX-8NS 7.62/.308 Comp / Flash Suppressor
    $70.00
    View Details
  8. American Trigger Company (ATC) AR Gold Adjustable Trigger
    American Trigger Company (ATC) AR Gold Adjustable Trigger
    $279.00
    View Details
  9. Stern Defense AR 9mm MOD4 MLOK Complete Upper - 4
    Stern Defense AR 9mm MOD4 MLOK Complete Upper - 4"
    $419.27
    View Details
  10. V Seven Weapon Systems 7075 Billet EX Enlightened AR15 Lower
    V Seven Weapon Systems 7075 Billet EX Enlightened AR15 Lower
    $287.12
    View Details
  11. Precision Armament - M41 Severe-Duty Muzzle Brake .308/ 7.62mm - Stainless
    Precision Armament - M41 Severe-Duty Muzzle Brake .308/ 7.62mm - Stainless
    $104.49
    View Details
  12. CMC Trigger 2 Stage Curve 1/3
    CMC Trigger 2 Stage Curve 1/3
    $201.60
    View Details
  13. Rainier Arms AR-15 Urban Combat M-Lok Handguard
    Rainier Arms AR-15 Urban Combat M-Lok Handguard
    $153.99 - $167.99
    View Details
  14. Schmeisser AR15 Free Float KeyMod Handguard
    Schmeisser AR15 Free Float KeyMod Handguard
    $119.99 - $165.95
    View Details
  15. Schmeisser AR15 2 Piece Drop-In KeyMod Handguard (Contract Overrun)
    Schmeisser AR15 2 Piece Drop-In KeyMod Handguard (Contract Overrun)
    $84.95 - $111.95
    View Details
  16. Geissele Super 3 Gun (S3G) Trigger
    Geissele Super 3 Gun (S3G) Trigger
    $245.00
    View Details
View as Grid List

Items 1-16 of 2383

Page
per page
Shop By
Shopping Options
Category
  1. Bolt Parts 120 item
  2. Buffer Systems 92 item
  3. Charging Handles 93 item
  4. Gas Systems 82 item
  5. Grips 171 item
  6. Muzzle Devices 277 item
  7. Parts & Kits 314 item
  8. Receiver Parts 402 item
  9. Rifle Barrels 235 item
  10. Rifle Handguards 251 item
  11. Stocks & Braces 159 item
  12. Trigger Parts 178 item
Price
  1. Less than $10 58 item
  2. $10 to $25 221 item
  3. $25 to $50 297 item
  4. $50 to $100 452 item
  5. $100 to $250 725 item
  6. $250 to $500 389 item
  7. $500 to $1000 167 item
  8. Greater than $1000 54 item
Manufacturer
  1. 21st Tec 6 item
  2. A3 Tactical 31 item
  3. ALG Defense 6 item
  4. Accu-Tac 2 item
  5. Aero Precision 73 item
  6. Aeroknox 8 item
  7. Agency Arms 1 item
  8. Airborne Arms 6 item
  9. American Trigger Company (ATC) 3 item
  10. Andro Corp Industries 8 item
  11. Angstadt Arms 13 item
  12. Apex Machining Company 2 item
  13. Apex Tactical Specialties 5 item
  14. Arisaka 6 item
  15. Armaspec 13 item
  16. Arms Republic 15 item
  17. Ascalon Arms 11 item
  18. B5 Systems 9 item
  19. BOBRO 1 item
  20. Ballistic Advantage 44 item
  21. Battle Arms Development 55 item
  22. Black River MFG 1 item
  23. Blackout Defense 10 item
  24. Blitzkrieg Components 17 item
  25. Bootleg 6 item
  26. Boss Barrels 8 item
  27. Bravo Company MFG (BCM) 77 item
  28. Breek Arms 11 item
  29. Brigand Arms 5 item
  30. Brügger & Thomet (B&T) 1 item
  31. CMC Triggers 4 item
  32. CMMG 1 item
  33. Centurion Arms 15 item
  34. Chisel Machining 5 item
  35. Christensen Arms 5 item
  36. Cobalt Kinetics 2 item
  37. Cross Machine Tool (CMT) 22 item
  38. DPM Systems Technologies 2 item
  39. Daniel Defense 21 item
  40. Dead Air Armament 9 item
  41. Dead Foot Arms LLC 12 item
  42. Devil Dog Concepts 2 item
  43. Die Free Co 1 item
  44. Driven Arms Co. 9 item
  45. Elftmann Tactical 12 item
  46. Emissary Development 4 item
  47. Ergo Grips 8 item
  48. F-1 Firearms 28 item
  49. F5 MFG 13 item
  50. Faxon Firearms 67 item
  51. Ferfrans 1 item
  52. Flatline Fiber Co 1 item
  53. Fortis MFG 60 item
  54. Forward Controls Design 53 item
  55. FosTecH 3 item
  56. Foxtrot Mike 6 item
  57. Gear Head Works 2 item
  58. Geissele 36 item
  59. Grand Power 1 item
  60. Grey Birch MFG 7 item
  61. Grey Ghost Precision 2 item
  62. Griffin Armament 27 item
  63. HB Industries 18 item
  64. HERA ARMS 20 item
  65. HUXWRX 5 item
  66. Half Cocked Arms (HCA) 1 item
  67. Heresy Design 6 item
  68. Hiperfire 17 item
  69. Icarus Precision 2 item
  70. Icon Defense 6 item
  71. Iron City Rifle Works 1 item
  72. JK Armament 16 item
  73. JL Billet 4 item
  74. JMAC Customs 63 item
  75. JP Enterprises Inc 43 item
  76. Jacob Grey 2 item
  77. James Madison Tactical (JMT) 3 item
  78. KNS Precision 14 item
  79. Kaiser US 1 item
  80. Kalashnikov USA 2 item
  81. Kaw Valley Precision 6 item
  82. Killer Innovations 1 item
  83. Kinetic Development Group 9 item
  84. Knight’s Armament Company 13 item
  85. Krebs Customs 9 item
  86. KynSHOT 6 item
  87. LUTH-AR 4 item
  88. Lancer Systems 3 item
  89. Lantac 25 item
  90. Law Tactical 1 item
  91. Lee Sporting 4 item
  92. Leitner-Wise 1 item
  93. Lewis Machine & Tool (LMT) 14 item
  94. MCM Firearms 1 item
  95. Mad Pig 6 item
  96. Magpul Industries 83 item
  97. Matador Arms 1 item
  98. Maxim Defense 21 item
  99. Mega Arms 11 item
  100. Midwest Industries 32 item
  101. Mission First Tactical 5 item
  102. Multitasker Tools 1 item
  103. NEMO Arms 7 item
  104. NIGHT FISION 1 item
  105. Neverwear Springs 1 item
  106. Next Level Armament 23 item
  107. Noveske 64 item
  108. Obsidian Arms 1 item
  109. Odin Works 8 item
  110. Orchid Defense Group 1 item
  111. Patriot Ordnance Factory (POF) 9 item
  112. Phase 5 Tactical 2 item
  113. Pioneer CNC 2 item
  114. Precision Armament 24 item
  115. Precision Reflex Inc 2 item
  116. Primary Weapon Systems 23 item
  117. Proof Research 17 item
  118. Q, LLC 2 item
  119. Quarter Circle 10 17 item
  120. R&D Precision 4 item
  121. RS Regulate 6 item
  122. Radian Weapons 19 item
  123. Rainier Arms, LLC 143 item
  124. Rainier Industries 16 item
  125. Rehv Arms 2 item
  126. Reptilia Corp 8 item
  127. Rex Silentium 1 item
  128. Riflespeed 3 item
  129. Rise Armament 22 item
  130. RogueOps 3 item
  131. Rubber City Armory 1 item
  132. SB Tactical 1 item
  133. SCALARWORKS 1 item
  134. SLR Rifleworks 10 item
  135. Schmeisser 5 item
  136. Seekins Precision 11 item
  137. Sharps Bros 32 item
  138. Shooting Innovations 2 item
  139. Sig Sauer 13 item
  140. Silencerco 17 item
  141. Sionics Weapon Systems 6 item
  142. Sons of Liberty Gun Works 40 item
  143. Spinta Precision 6 item
  144. Sprinco (Tactical Springs) 6 item
  145. Springer Precision 1 item
  146. Stag Arms 7 item
  147. Stern Defense 8 item
  148. Strike Industries 69 item
  149. Superlative Arms 14 item
  150. Surefire 16 item
  151. Tactical Edge Arms 3 item
  152. Tango Down 1 item
  153. Taran Tactical Innovations 2 item
  154. Timney Triggers 31 item
  155. Tippmann Arms 1 item
  156. Torrent Suppressors 2 item
  157. Triggertech 13 item
  158. Troy Industries 7 item
  159. TruCalibre 9 item
  160. True North Concepts 7 item
  161. Tyrant Designs 19 item
  162. Underground Tactical 1 item
  163. Unity Tactical 1 item
  164. V Seven Weapon Systems 86 item
  165. VKTR Industries 3 item
  166. VLTOR 17 item
  167. Valhalla Tactical 1 item
  168. WMD Guns 20 item
  169. WOOX 5 item
  170. White Label Armory 2 item
  171. ZEV Technologies 5 item
Caliber
  1. .22 Cal 2 item
  2. .22 LR 4 item
  3. .223 Rem 3 item
  4. .223 Wylde 28 item
  5. .223/5.56 22 item
  6. .30 Cal 15 item
  7. .30-30 1 item
  8. .308 14 item
  9. .308 Win 12 item
  10. .338 1 item
  11. .357 Magnum 2 item
  12. .38/.357 Magnum 1 item
  13. .44/.45 2 item
  14. .45 ACP 5 item
  15. .45-70 GOVT 2 item
  16. .458 Socom 3 item
  17. 12 Gauge 1 item
  18. 300 Blackout 48 item
  19. 300 Norma Mag 1 item
  20. 338 Lapua 2 item
  21. 5.56 NATO 131 item
  22. 5.56X45 10 item
  23. 5.56mm 10 item
  24. 6.5 Creedmoor 26 item
  25. 6.5 Grendel 11 item
  26. 6.8 SPC 3 item
  27. 6.8 SPC2 1 item
  28. 6MM Creedmoor 7 item
  29. 6mm ARC 13 item
  30. 7.62mm 6 item
  31. 7.62x39 16 item
  32. 7.62x51 14 item
  33. 8.6 Blackout 2 item
  34. 9mm 78 item
Barrel Length
  1. 10" 1 item
  2. 10.3" 12 item
  3. 10.5" 21 item
  4. 10.7" 3 item
  5. 11" 1 item
  6. 11.5" 13 item
  7. 11.85" 3 item
  8. 12" 4 item
  9. 12.3" 1 item
  10. 12.5" 11 item
  11. 13.7" 6 item
  12. 13.9" 1 item
  13. 14.5" 21 item
  14. 16" 97 item
  15. 16.1" 3 item
  16. 16.3" 2 item
  17. 17" 1 item
  18. 18" 50 item
  19. 20" 23 item
  20. 22" 11 item
  21. 24" 8 item
  22. 26" 5 item
  23. 3.1" 1 item
  24. 3.66" 1 item
  25. 4" 3 item
  26. 4.5" 1 item
  27. 5" 3 item
  28. 5.5" 9 item
  29. 6" 5 item
  30. 6.5" 2 item
  31. 6.75" 1 item
  32. 7" 2 item
  33. 7.25" 1 item
  34. 7.5" 4 item
  35. 7.75" 2 item
  36. 7.94" 1 item
  37. 8" 9 item
  38. 8.3" 3 item
  39. 8.5" 8 item
  40. 9" 6 item
  41. 9.5" 1 item
  42. 9.75" 1 item
Option
  1. 1.125-28 TPI 3 Lug/Booster Adaptor 1 item
  2. 1.180-24 TPI 3 Lug/Booster Adaptor 1 item
  3. 4.720" 2 item
  4. 6.295" 2 item
  5. 7.870" 2 item
  6. 9.445" 2 item
  7. 9mm 2 item
  8. AK-47/74 7 item
  9. AKM 1 item
  10. AR-10 57 item
  11. AR-15 339 item
  12. AR-9 12 item
  13. Adjustable 15 item
  14. B&T APC 1 item
  15. Blue - Enhanced Power 1 item
  16. Buffer & Spring - 9mm 2 item
  17. Buffer & Spring - H1 3 item
  18. Buffer & Spring - H2 2 item
  19. Buffer & Spring - H3 2 item
  20. Buffer & Spring - Standard 3 item
  21. Bull's Eye 1 item
  22. CZ 32 item
  23. Carbine Length 1 item
  24. Dimpled 3 item
  25. FN 509 1 item
  26. FNH 2 item
  27. Front 1 item
  28. Full Size 2 item
  29. Glock 4 item
  30. Green - Rifle Length Standard Power 1 item
  31. Green Laser 2 item
  32. Heckler & Koch 1 item
  33. Holed 1 item
  34. IWI Uzi Pro 1 item
  35. JP Silent Captured Spring - 9mm 1 item
  36. JP Silent Captured Spring - Heavy 1 item
  37. JP Silent Captured Spring - Standard 1 item
  38. KS 2 item
  39. Large Lever 2 item
  40. Long 2 item
  41. MCS 2 item
  42. Mid 1 item
  43. Mid Length 2 item
  44. Minimal 1 item
  45. Non-Adjustable 48 item
  46. Orange - Extra Extra Power 1 item
  47. Pistol 1 item
  48. Profile 1 item
  49. Rear 1 item
  50. Red - Extra Power 1 item
  51. Remington 1 item
  52. Remington 700 Long Action BDL 1 item
  53. Remington 700 Short Action 3 item
  54. Remington 700 Short Action BDL 2 item
  55. Rifle 1 item
  56. Rifle Length 1 item
  57. SRS-9mm 6.4 oz. 1 item
  58. SRS-AR10 5.7 oz. 1 item
  59. SRS-BB 5.7 oz. 1 item
  60. SRS-C 3.3 oz. 1 item
  61. SRS-H 3.8 oz. 1 item
  62. SRS-H2 4.7 oz. 1 item
  63. SRS-H3 5.6 oz. 1 item
  64. Sauer 100 1 item
  65. Serrated 3 item
  66. Sharps Bros 1 item
  67. Short 2 item
  68. Sig Sauer 1 item
  69. Small Lever 2 item
  70. Springfield 1 item
  71. Standard 4 item
  72. Vertical Lines 1 item
  73. WA 3 item
  74. White - Standard Power 1 item
  75. White/Red - Intermediate Power 1 item
  76. Yellow - Reduced Power 1 item
Mount
  1. KeyMod 22 item
  2. M-LOK 190 item
  3. Other 4 item
  4. Picatinny 94 item
Stock Status
  1. In Stock 1500 item
  2. Out of Stock 883 item
My Wish List
Last Added Items
  1. Add to Cart
    Remove This Item
Go to Wish List
You have no items in your wish list.
Google Customer Reviews Google Customer Reviews