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*WASHINGTON STATE RESIDENTS ONLY* LAST CALL - All MAGAZINES and IN-STORE firearms orders with Magazines over 10 rounds must be place by 11:59pm PST, June 28th, 2022

AR15 Parts

Rainier Arms has one of the best selections of quality AR15 parts and AR15 accessories. Get a good deal online or come and visit our store. Find the best uppers, lowers, stocks, barrels, triggers, and more parts for your AR15 rifle.

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  1. Odin Works ATLAS adjustable recoil reducing compensator 5.56
    Odin Works ATLAS adjustable recoil reducing compensator 5.56
    $94.05
    Odin Works ATLAS adjustable recoil reducing compensator 5.56 Learn More
  2. Patriot Ordnance Factory (POF) AR-15 Drop-In Trigger Assembly - Two Stage
    Patriot Ordnance Factory (POF) AR-15 Drop-In Trigger Assembly - Two Stage
    As low as $190.00

    Patriot Ordnance Factory (POF) AR-15 Drop-In Trigger Assembly - Two Stage

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  3. Lancer Systems AR-15 L5AWM 20RD Mag - Black
    Lancer Systems AR-15 L5AWM 20RD Mag - Black
    $16.09

    This product is restricted in the States of California, Colorado, Connecticut, Washington D.C, Hawaii, Maryland, Massachusetts, New Jersey, New York, Vermont, and may be restricted in other local jurisdictions.

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  4. Odin Works AR-15 LOW Mass Bolt Carrier Group - Black Nitride
    Odin Works AR-15 LOW Mass Bolt Carrier Group - Black Nitride
    $170.05

    This BCG from ODIN Works is a High Performance* part that will change the way your rifle feels and shoots. This BCG has been significantly lightened, weighing in at only 9 ounces, it dramatically changes the amount of mass reciprocating in your gun. This BCG also features a Salt Bath Nitride finish that is both slick and durable. The carrier is made from 8620 steel and the bolt from 9310 steel.

    Bolt Carrier Group fits AR15/M4 compatible style Rifles (i.e.) .223/5.56mm, .300 Blackout.

    *This is a HP or High Performance part. It will change how your rifle feels and shoots. Tuning may be required to make the gun properly run with this part. This can be done via the gas system or the buffer system. 

    Weight 9 oz. 

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  5. Seekins Precision SELECT ADJUSTABLE GAS BLOCK
    Seekins Precision SELECT ADJUSTABLE GAS BLOCK
    As low as $113.05
    Seekins Precision SELECT ADJUSTABLE GAS BLOCK Learn More
  6. Primary Weapons Systems MK1 MOD 1/PRO AR-15 Complete Rifle Lower Receiver
    Primary Weapons Systems MK1 MOD 1/PRO AR-15 Complete Rifle Lower Receiver
    $389.95


    FFL Required Before Shipping.
    Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.

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  7. Tyrant Designs LWP Grip
    Tyrant Designs LWP Grip
    As low as $94.45
    Tyrant Designs LWP Grip Learn More
  8. Next Level Armament NLX Ambi Charging Handle - AR-15/AR-10
    Next Level Armament NLX Ambi Charging Handle - AR-15/AR-10
    As low as $71.00
    Next Level Armament NLX Ambi Charging Handle - AR-15/AR-10 Learn More
  9. Griffin Armament M4SD Hammer Comp 5.56mm
    Griffin Armament M4SD Hammer Comp 5.56mm
    $85.00

    Griffin Armament M4SD Hammer Comp 5.56mm

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  10. Triggertech Adaptable AR Trigger - PVD Black
    Triggertech Adaptable AR Trigger - PVD Black
    As low as $249.99
    Triggertech Adaptable AR Trigger - PVD Black Learn More
  11. Rainier Arms Taper Pin Gas Block Tool
    Rainier Arms Taper Pin Gas Block Tool
    $59.95
    Rainier Arms Taper Pin Gas Block Tool Learn More
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