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. HB Industries Grand Power Stribog Short Stroke Buffer
    HB Industries Grand Power Stribog Short Stroke Buffer
    $28.00
  2. HB Industries CZ Scorpion EVO3 Reduced Weight Trigger Spring Kit
    HB Industries CZ Scorpion EVO3 Reduced Weight Trigger Spring Kit
    $12.69
  3. HB Industries CZ Scorpion EVO3 DELTA Extended Charging Handle
    HB Industries CZ Scorpion EVO3 DELTA Extended Charging Handle
  4. HB Industries CZ Scorpion EVO3 DELTA Trigger
    HB Industries CZ Scorpion EVO3 DELTA Trigger
  5. HB Industries B&T GHM9 Charging Handle V2 - Black
    HB Industries B&T GHM9 Charging Handle V2 - Black
    $41.58
  6. HB Industries CZ Bren 2 Optimized Gas Regulator Assembly 5.56 - 8"
    HB Industries CZ Bren 2 Optimized Gas Regulator Assembly 5.56 - 8"
    $108.89
  7. HB Industries B&T GHM9 Charging Handle - Black
    HB Industries B&T GHM9 Charging Handle - Black
    $41.58
  8. HB Industries CZ Bren 2 HK G36 Stock Adapter Kit
    HB Industries CZ Bren 2 HK G36 Stock Adapter Kit
    $249.48
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