The original mil-spec AR-15 lower build kit.
Includes the O.G. pistol brace, the SBA3 from SB Tactical. This mil-spec lower build kit includes the parts you need to assemble your stripped lower receiver, completing the "lower half" of your custom AR-15 pistol build.
Classic Lower Parts Kit
This Classic LPK features a mil-spec hammer and trigger, with standard pins and springs to provide a single-stage trigger pull of approximately 4.5 pounds. It offers a crisp, clean break and reset.
Buffer Kit
The buffer components in this lower build kit are 100% mil-spec, ensuring compatibility with virtually all modern AR-15 lower receivers (whether forged or billet).
LPK: What's Included
- Pivot Pin
- Pivot Pin Detent
- Pivot Pin Detent Spring
- Takedown Pin
- Takedown Pin Detent
- Takedown Pin Detent Spring
- Bolt Catch
- Bolt Catch Plunger
- Bolt Catch Roll Pin
- Bolt Catch Spring
- Buffer Retainer
- Buffer Retainer Spring
- Hammer Pin
- Hammer Spring
- Trigger Pin
- Trigger Spring
- Disconnect
- Disconnect Spring
- Magazine Catch
- Magazine Catch Spring
- Magazine Release Button
- Trigger Guard
- Trigger Guard Roll Pin
- Safety Selector
- Selector Detent
- Selector Detent Spring
- Pistol Grip
- Lock Washer
- Pistol Grip Screw
- Hammer
- Pistol Grip
- Trigger
Buffer Kit: What's Included
- Six-position buffer tube
- Mil-spec buffer spring
- 3.0-ounce AR-15 buffer
- Adjustable SBA3 brace
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.
- Platform:
- AR15
- Caliber:
- .223 Wylde
- Caliber:
- .300 AAC Blackout
- Caliber:
- 5.56
