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
We can't find products matching the selection.
Shop By
Now Shopping by
Shopping Options
- Caliber 5.56 NATO Remove This Item
- Price $0.00 - $999.99 Remove This Item
Barrel Length
Manufacturer
- Aero Precision 1 item
- Andro Corp Industries 2 items
- Ballistic Advantage 6 items
- Bootleg 1 item
- Bravo Company MFG (BCM) 2 items
- Centurion Arms 2 items
- Daniel Defense 2 items
- Dead Air Armament 1 item
- Faxon Firearms 13 items
- Fortis MFG 2 items
- Geissele 3 items
- Heresy Design 2 items
- HUXWRX 1 item
- Icon Defense 2 items
- JMAC Customs 2 items
- Lewis Machine & Tool (LMT) 2 items
- Magpul Industries 2 items
- NEMO Arms 1 item
- Noveske 11 items
- Rainier Arms, LLC 17 items
- Sharps Bros 1 item
- Silencerco 2 items
- Sons of Liberty Gun Works 14 items
- Spinta Precision 1 item
- Tactical Edge Arms 1 item
Product Type
Rail Length
Thread Pitch
My Wish List