This AR-15 lower parts kit does not include a trigger, hammer or pistol grip. This kit is intended to be paired with a custom, upgraded grip and drop-in trigger of your choice.
What's Included:
- Takedown/Pivot Spring
- Takedown/Pivot Detent
- Takedown Pin
- Pivot Pin
- Bolt Catch
- Bolt Catch Spring
- Bolt Catch Buffer
- Bolt Catch Roll Pin
- Safety Selector
- Safety Selector Spring
- Safety Selector Detent
- 4-40 Set Screw (for threaded takedown pin detent hole)
- Buffer Retainer
- Buffer Retainer Spring
- Magazine Catch Body
- Magazine Catch Spring
- Magazine Catch Button
Install Instructions
Follow our step-by-step picture and video guide to install your AR-15 Lower Parts Kit. You'll also need some basic tools, like an Armorer's Wrench, and Roll Pin Punches with a Gunsmithing Hammer.
Guide: How to install the AR-15 lower parts kit.
Completing Your AR Build
With a finish lower receiver, you can either piece together a custom upper, or buy a barreled upper assembly that's ready to go out of the box. Our barreled uppers include high-quality barrels, handguards, and mil-spec bolt carrier groups with charging handles included.
Buy a Barreled Upper Assembly here.
WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov
Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.
80-Lower.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.
