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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16 Items

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  1. Silencerco SCO15 Billet AR15 Upper Receiver
    Silencerco SCO15 Billet AR15 Upper Receiver
    $219.00
  2. Faxon Firearms Big Gunner 8.6BLK AR-10/LR308 Barrel - 12"
    Faxon Firearms Big Gunner 8.6BLK AR-10/LR308 Barrel - 12"
    $219.88
  3. Sharps Bros Livewire AR-15 Complete Lower Receiver w/o Stock
    Sharps Bros Livewire AR-15 Complete Lower Receiver w/o Stock
    Special Price $219.99 Regular Price $269.95
  4. Hiperfire HIPERTOUCH Reflex, AR15/10 Trigger Assembly
    Hiperfire HIPERTOUCH Reflex, AR15/10 Trigger Assembly
    $213.75
  5. Aero Precision AR15 Atlas S-One Handguard 15" - FDE
    Aero Precision AR15 Atlas S-One Handguard 15" - FDE
    $219.99
  6. Faxon Firearms Pencil .223 Wylde AR-15 Barrel - 14.5"
    Faxon Firearms Pencil .223 Wylde AR-15 Barrel - 14.5"
    $211.60
  7. Midwest Industries AK Alpha Series M-LOK Handguard - 10"
    Midwest Industries AK Alpha Series M-LOK Handguard - 10"
    $219.95
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16 Items

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