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AR 15 Lower Assembly | (CA-Compliant) Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Premium Billet | 80% Lower
$324.95 $289.95 (You save $35.00)
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Free Shipping on all orders $250+!


SKU: 6983_28754_31516_AR15-BLT-BLK-Fire-Safe_CA

No AR-15 build is complete without a butt stock assembly - and this one comes with all you need: Black Billet FIRE/SAFE engraved 80% lower, lower parts kit, butt stock, buffer tube assembly.

The Premium 80% Lower Fire/Safe Marked Billet has been redesigned with YOU in mind. The Premium 80% Billet has been enhanced and now offers a threaded bolt catch release hole as well as a threaded rear takedown detent hole. These enhancements allow for easy and fluid install of your AR Lower parts kit components, ending some of the most frustrating aspects of your 80% lower build. Each Premium 80% Lower Billet will come with the needed screws and hex key for install.

One (1) Premium Black Billet FIRE/SAFE 80% Lower Receiver:

  • FIRE/SAFE Engraved
  • Color: Anodized Mil-Spec Black
  • Quantity:1
  • Billet 6061-T6 Aluminum
  • Threaded Bolt Catch Release Pin Hole
  • Threaded Rear Takedown Detent Hole
  • Hex Key
  • Broached Magwell
  • 100% Made in the USA

The Classic Lower Parts Kit is essential to finishing your 80% lower. To have multiple build kits, or lower receivers to swap out on your AR-15 rifle, it’s crucial to have multiple lower parts kits. Sure there are no fancy color coded bags, but rest assured this lower parts kit offers all the same parts needed to finish your 80% lower, and for a fraction of the cost. This lower parts kit comes with all the internal parts needed to finish your lower, from the pivot pin to the trigger, with this kit you’re ready to complete your AR 15 build kit.

This Classic Lower Parts Kit comes complete with:

  • Hammer
  • Pistol Grip
  • Trigger

Pivot & Takedown

  • Pivot Pin
  • Pivot Pin Detent
  • Pivot Pin Detent Spring
  • Takedown Pin
  • Takedown Pin Detent
  • Takedown Pin Detent Spring

Bolt Grouping

  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Roll Pin
  • Bolt Catch Spring
  • Buffer Retainer
  • Buffer Retainer Spring

Trigger & Hammer Assembly

  • Hammer Pin
  • Hammer Spring
  • Trigger Pin
  • Trigger Spring
  • Disconnect
  • Disconnect Spring

Magazine & Trigger Guard

  • Magazine Catch
  • Magazine Catch Spring
  • Magazine Release Button
  • Trigger Guard
  • Trigger Guard Roll Pin

Safety Select & Pistol Grip Connect

  • Safety Selector
  • Selector Detent
  • Selector Detent Spring
  • Pistol Grip Lock Washer
  • Pistol Grip Screw

The ARMaglock is the solution to fixed magazine regulations. It allows your AR to remain California-Compliant while improving the speed at which you can remove and re-insert magazines.

One (1) Butt Stock Kit:

This butt stock kit includes both an adjustable carbine stock and buffer tube assembly. The classic adjustable carbine stock is constructed from a durable polymer composite and is designed for quick adjustment. Additionally, this carbine butt stock offers three different sling attachment options.

One (1) Buffer Tube Assembly:

The PSA buffer tube assembly provides a mil-spec diameter 7075 buffer tube, lock ring & castle nut, latch plate, buffer housing and buffer spring.

Purchase this butt stock assembly today for your next 80% lower receiver build.

No FFL Required Made In The USA Lifetime Warranty

AR 15 Lower Assembly | (CA-Compliant) Lower Parts Kit | Butt Stock | Buffer Tube | FIRE/SAFE | Premium Billet | 80% Lower

$324.95 $289.95 (You save $35.00)
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Free Shipping on all orders $250+!

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Graet Product

Great product fast and easily shipping



Kit is a PSA lower kit and PSA stock. Great service!


Best compleat AR lower kit i have found

this is a high quality lower. It was easy to work with and easy to assemble. I will be buying another soon.

Berk Flockton

Best ar anywhere

this is a high quality lower was easy to work with and finished it in about one hour using a Bridgeport mill I will soon buy another Thanks Chad