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. Ballistic Advantage AR-15 Enhanced Lower Receiver
    Ballistic Advantage AR-15 Enhanced Lower Receiver
    $90.24
  2. Ballistic Advantage AR-15 Upper Receiver w/ Logo
    Ballistic Advantage AR-15 Upper Receiver w/ Logo
    $90.25
  3. VLTOR AR15 Charging Handle - Ambidextrous Latch
    VLTOR AR15 Charging Handle - Ambidextrous Latch
    $95.36
  4. Battle Arms Development RACK AR-10 Ambi Charging Handle
    Battle Arms Development RACK AR-10 Ambi Charging Handle
    $94.99
  5. Angstadt Arms Blastwave 3-Lug QD 9mm Blast Shield
    Angstadt Arms Blastwave 3-Lug QD 9mm Blast Shield
    $90.00
  6. WMD Guns .308 Lower Parts Kit Mod 3 - NiB-X/Nitromet
    WMD Guns .308 Lower Parts Kit Mod 3 - NiB-X/Nitromet
    $95.00
  7. Aeroknox Butterfly Brake .223/5.56
    Aeroknox Butterfly Brake .223/5.56
    $90.00
  8. Griffin Armament M4SD Flash Comp 5.56mm
    Griffin Armament M4SD Flash Comp 5.56mm
    $94.95
  9. Hiperfire EDT Heavy Gunner, AR15/10 Trigger Assembly
    Hiperfire EDT Heavy Gunner, AR15/10 Trigger Assembly
    $94.05
  10. Precision Armament M4-72 AK-47 Severe-Duty Compensator
    Precision Armament M4-72 AK-47 Severe-Duty Compensator
    $94.99
  11. JK Armament 155LT Quick Attach Taper Mount
    JK Armament 155LT Quick Attach Taper Mount
    $90.00
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