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Magpul® MOE® AR-15 Lower Build Kit

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Welp, we outdid ourselves this time. This here's one helluva kit. Once you've grabbed a stripped lower (sold separately) this parts kit will provide the internals for that other half of your AR build. Finished. Finito. Completo. We added some mil-spec parts, but we also threw in some kickass Magpul® parts too! 

Mil-Spec AR15 Lower Parts Kit (w/ Hammer and Trigger)

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? The mil-spec AR-15 LPK comes in at a low-price with machining and performance that truly feels match-grade.

Perfectly Polished for Performance

Th quality control is second to none and the finish show it: Inside 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 Lower Parts Kit 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

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.

Mil-spec AR-15 Buffer Tube Assembly

  • Mil-spec dimensions
  • Six-position buffer tube
  • Accepts all standard AR-type stocks

Magpul® MOE® Mil-Spec Carbine Stock

There's a reason Magpul® is amazing at what they do. Their parts are extremely rugged, just as tough if not tougher than mil-spec stuff, and they weigh a hell of a lot less. The Magpul® MOE® Mil-Spec Carbine Stock is no different. It's light, it's tough, and it's designed smart. Its design makes the length adjustment latch both fast and shielded from being accidentally accuated or snagged. See below for all its awesome features.


  • Mounts on Mil-Spec sized carbine receiver extension tube
  • Premium chrome-silicon lock spring provides positive locking and long service life
  • Sloping cheek weld combines a slim profile with user comfort
  • Side mounting slots accept optional cheek risers for NON AR15/M4 applications
  • Shielded release latch prevents snagging and accidental operation
  • Removable 0.30" Rubber Butt-Pad offers an anti-slip surface and increases impact protection
  • Compatible with Magpul® ASAP®, ASAP® QD, and other receiver-mount sling attachments.

Magpul® MOE® AR15/M4 Grip

Let's face it. The AR-15 for how amazingly modular it is and how it can adapt to any situation, falls short in one key area: the grip is bad. It doesn't care if you're comfortable holding it or not. Not to mention the angle is horrible. The way an AR's OEM grip was angled hurt soldiers' wrists and eventually forced them to start holding it incorrectly just to squeeze as much comfort as they could out of it. But that was the past.

Here in the present, Magpul® annihilates the issue with their MOE® AR15/M4 Grip. First, it solves the biggest issue of the G.I. mil-spec grip by having a noticeably steeper grip angle. No more contorting your wrist to get that high grip purchase. Second, Magpul® put a little more thickness into it than the mil-spec grip. You'll instantly notice the difference. And just as an added icing on the cake, they've turned the inside into a compartment to store gun oil or batteries, or whatever else.


  • Anti-slip grip texture
  • Internal storage compartment
  • MUCH better grip angle than mil-spec grips
  • Thicker diameter for meatier grip
  • Mounting hardward included

And oh yeah, they're made in the U.S.A.

Magpul® MOE® Enhanced AR15/M4 Polymer Trigger Guard

Stop installing that mil-spec aluminum trigger guard on every AR you build. The Magpul® MOE® Enhanced AR15/M4 Polymer Trigger Guard is way better. Why? For starters, it's super ergonomic and gives your trigger finger much more room which is great if you're wearing gloves. Second, it's made from a tough-as-hell polymer, that's just as tough if not tougher than that mil-spec one. Oh, and installation is simple and doesn't require any punches or specialized tools, so you know you won't mar or mess up your lower as you install it. All you need is a hex wrench. See below for more features.


  • Easily installed without specialized tools
  • Ergonomic, enlarged design for gloves and covered digits
  • Fills the annoying "gap" at the rear of the standard trigger guard
  • Works well with most 7.62x51 AR platforms, but some custom fitting may be required

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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. only ships within the United States. Federal legislation dictates we cannot ship our products internationally.


We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.