Description

Want an AR-15 trigger that suffers no creep, take-up, or over-travel? Looking for the easiest-to-install LPK? How about the most affordable parts kit possible? This mil-spec AR-15 LPK comes in at a great price with machining and performance that feels match-grade.

Polished for Performance

Inside this kit, you’ll find a disconnector, hammer hook, and sear that were laser-cut and polished to break as clean as glass at exactly 4.5 pounds.

The trigger affords perfect reset after every pull, with no break-in required. Every roll pin presses easily, while the hammer and trigger pins glide in with little effort.

Complete AR-15 LPK with Pistol Grip

This AR-15 Lower Parts Kit includes all components required for assembling your AR-15 stripped lower receiver:

Bolt Catch
Bolt Catch Plunger
Bolt Catch Roll Pin
Bolt Catch Spring
Buffer Retainer
Buffer Retainer Spring
Disconnector
Disconnect Spring
Steel Hammer
Hammer Pin
Hammer Spring
Magazine Catch
Magazine Catch Button
Magazine Catch Spring
Pistol Grip (A2 style)
Pistol Grip Lock Washer
Pistol Grip Screw
Pivot Pin
Pivot Pin Detent
Pivot Pin Detent Spring
Selector
Selector Detent
Selector Detent Spring
Takedown Pin
Takedown Pin Detent
Takedown Pin
Detent Spring
Trigger
Trigger Guard
Trigger Guard Roll Pin
Trigger Pin
Trigger Spring

Required Tools

To install all the components listed above, you’ll need a pair of roll pin punches and a gunsmithing hammer. An Armorer’s Wrench is recommended for installing the buffer assembly (sold separately, see details below).

Grab everything you need from our Gunsmithing Tools.

Easy-to-Follow Install Instructions

First time assembling, or need assistance with certain steps? Check out our in-depth instructional and picture guide. It shows the full LPK assembly with tips and tricks, including tools required and the buffer tube and castle nut install.

Buffer Assembly Sold Separately

This lower parts kit does not include a buffer tube, stock or brace, nor a buffer or recoil spring. Those components can be purchased here.

Finishing Your Custom AR-15 Build

This lower parts kit is compatible with retail-bought stripped lower receivers and fabricated AR-15 80% lowers. Learn what other parts you need to finish your AR-15 with our Beginner’s Build Guide.

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 Restrictions

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.