raineirarms

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.

View as Grid List

Items 49-64 of 67

per page
  1. Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 16"
    $855.00
  2. Dead Foot Arms AR-15 AR-SD 9MM Upper Assembly
    Dead Foot Arms AR-15 AR-SD 9MM Upper Assembly
  3. Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
    Sons of Liberty Gun Works M4-89 5.56 AR-15 Upper - 13.7"
    $950.00
  4. Huxwrx Flash Hider-QD 762 Suppressor Mount - 5/8x24
    Huxwrx Flash Hider-QD 762 Suppressor Mount - 5/8x24
    $142.00
  5. Sig Sauer MCX Spear - LT 7.62X39 Complete Upper 11.5"
    Sig Sauer MCX Spear - LT 7.62X39 Complete Upper 11.5"
    $1,999.99
  6. Huxwrx Flash Hider-QD 6 - 5/8x24
    Huxwrx Flash Hider-QD 6 - 5/8x24
    $144.00
  7. Noveske AR-15 N4 5.56 NATO SPR Upper - 18"
    Noveske AR-15 N4 5.56 NATO SPR Upper - 18"
    $1,543.75
  8. Noveske Two Port 5.56mm Muzzle Brake - 1/2x28
    Noveske Two Port 5.56mm Muzzle Brake - 1/2x28
    $84.55
  9. Q LLC Flash Hider 8.6BLK - 5/8x24
    Q LLC Flash Hider 8.6BLK - 5/8x24
    $115.00
View as Grid List

Items 49-64 of 67

per page
Google Customer Reviews Google Customer Reviews