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.
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Caliber
Category
Finish
Manufacturer
- Aero Precision 20 items
- Aeroknox 3 items
- Angstadt Arms 1 item
- Armaspec 1 item
- Ballistic Advantage 5 items
- Battle Arms Development 7 items
- Blackout Defense 5 items
- Blitzkrieg Components 1 item
- Bootleg 1 item
- Bravo Company MFG (BCM) 8 items
- Centurion Arms 1 item
- Cross Machine Tool (CMT) 5 items
- Daniel Defense 2 items
- Elftmann Tactical 1 item
- Faxon Firearms 2 items
- Fortis MFG 3 items
- Forward Controls Design 2 items
- Geissele 4 items
- HERA ARMS 3 items
- James Madison Tactical (JMT) 1 item
- Knight’s Armament Company (KAC) 2 items
- KNS Precision 1 item
- Lantac 3 items
- Magpul Industries 1 item
- Maxim Defense 1 item
- Midwest Industries 1 item
- NEMO Arms 1 item
- Next Level Armament 2 items
- Noveske 3 items
- Patriot Ordnance Factory (POF) 2 items
- Precision Armament 1 item
- Primary Weapon Systems 1 item
- Rainier Arms, LLC 3 items
- Rainier Industries 1 item
- Sharps Bros 2 items
- Silencerco 2 items
- Sionics Weapon Systems 3 items
- Sons of Liberty Gun Works 1 item
- Stag Arms 1 item
- Troy Industries 1 item
- Tyrant Designs 1 item
- V Seven Weapon Systems 4 items
- VLTOR 4 items
- WMD Guns 4 items
Product Type
- Anti Walk Pins 2 items
- AR-10 Handguard 1 item
- AR-15 Assembled Upper Receiver 3 items
- AR-15 Charging Handle 6 items
- AR-15 Complete Lower Receiver 8 items
- AR-15 Complete Upper Receiver 1 item
- AR-15 Partial Upper Receiver 1 item
- AR-15 Handguard 23 items
- AR-15 Receiver Set 5 items
- AR-15 Stripped Lower Receiver 12 items
- AR-15 Stripped Upper Receiver 14 items
- Bolt Carrier Group 7 items
- Bolt Catch 1 item
- Buffer Kit 2 items
- Buffer Tube 2 items
- Builders Kit 1 item
- Cam Pin 1 item
- Charging Handle 2 items
- Compensator 1 item
- End Plate 1 item
- Flash Hider 1 item
- Forearm Accesory 1 item
- Front Sight 1 item
- Grip Module 1 item
- Handguard 3 items
- Lower Parts Kit 5 items
- Muzzle Brake 2 items
- Parts Kit 1 item
- Patch 1 item
- Safety Selector 2 items
- Sight Post 1 item
- Stock Adapter 1 item
- Take Down / Pivot Pins 3 items
- Trigger 4 items
- Trigger Guard 1 item
- Upper Parts Kit 1 item
Rail Length
- 4" 1 item
- 5.5" 1 item
- 6.7" 3 items
- 7" 4 items
- 9" 2 items
- 9.3" 1 item
- 9.5" 3 items
- 9.6" 1 item
- 10" 7 items
- 10.25" 1 item
- 10.5" 2 items
- 11.1" 1 item
- 12" 10 items
- 12.25" 1 item
- 12.4" 1 item
- 12.5" 1 item
- 13" 4 items
- 13.5" 2 items
- 13.7" 4 items
- 13.8" 1 item
- 14" 1 item
- 15" 17 items
- 15.3" 1 item
- 17" 1 item
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