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.

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  1. Krebs Custom Safety for Kalashnikov USA KP-9 Pistol
    Krebs Custom Safety for Kalashnikov USA KP-9 Pistol
    $62.00
  2. Krebs Custom Yugo AMBI Safety
    Krebs Custom Yugo AMBI Safety
    $66.50
  3. Aero Precision AR-15 Carbine Buffer Kit
    Aero Precision AR-15 Carbine Buffer Kit
    $67.99
  4. Noveske Lo Pro Gas Block .750 2 Screw
    Noveske Lo Pro Gas Block .750 2 Screw
    $61.75
  5. V Seven Weapon Systems Endplate / Castle Nut Combo
    V Seven Weapon Systems Endplate / Castle Nut Combo
    $61.11
  6. V Seven Weapon Systems Carbine Buffer Tube
    V Seven Weapon Systems Carbine Buffer Tube
    $63.05
  7. V Seven Weapon Systems Titanium Barrel Nut for BCM KMR
    V Seven Weapon Systems Titanium Barrel Nut for BCM KMR
    $68.87
  8. Hera Arms LC-S Linear Compensator-Small
    Hera Arms LC-S Linear Compensator-Small
    $69.00
  9. Lantac GB750-S Ultra Low Profile Gas Block
    Lantac GB750-S Ultra Low Profile Gas Block
    $62.99
  10. Timney Triggers AR 49ER Ambidextrous Safety Selector
    Timney Triggers AR 49ER Ambidextrous Safety Selector
    Special Price $66.99 Regular Price $80.99
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