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. Sig Sauer TREAD Vertical M-LOK Grip Kit
    Sig Sauer TREAD Vertical M-LOK Grip Kit
    Special Price $37.99 Regular Price $49.99
  2. Aeroknox AX // Foregrip - M-LOK
    Aeroknox AX // Foregrip - M-LOK
    $50.00
  3. Ballistic Advantage Lo-Pro Gas Block - .750"
    Ballistic Advantage Lo-Pro Gas Block - .750"
    $28.50
  4. Griffin Armament Taper Mount Minimalist Blast Shield
    Griffin Armament Taper Mount Minimalist Blast Shield
    $84.95
  5. Ballistic Advantage AR-15 Enhanced Lower Receiver
    Ballistic Advantage AR-15 Enhanced Lower Receiver
    $90.24
  6. Ballistic Advantage AR-15 Stripped Lower Receiver
    Ballistic Advantage AR-15 Stripped Lower Receiver
    $80.75
  7. Aero Precision AR15 Enhanced Carbine Buffer Kit
    Aero Precision AR15 Enhanced Carbine Buffer Kit
    $76.99
  8. Ballistic Advantage AR-15 Upper Receiver w/ Logo
    Ballistic Advantage AR-15 Upper Receiver w/ Logo
    $90.25
  9. Rainier Arms Exclusive Spinta Precision AR-15 9mm Thermal Barrel - 5.25” Nitride (Rainier Arms Exclusive)
    Spinta Precision AR-15 9mm Thermal Barrel - 5.25” Nitride (Rainier Arms Exclusive)
    Special Price $77.99 Regular Price $149.99
  10. Krebs Custom Trigger Pin Retaining Plate for AK Rifles
    Krebs Custom Trigger Pin Retaining Plate for AK Rifles
    $10.50
  11. Krebs Custom Safety for Kalashnikov USA KP-9 Pistol
    Krebs Custom Safety for Kalashnikov USA KP-9 Pistol
    $62.00
  12. Krebs Custom Yugo AMBI Safety
    Krebs Custom Yugo AMBI Safety
    $66.50
  13. JMAC Customs Metric Face Mount Shims
    JMAC Customs Metric Face Mount Shims
    $8.96
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