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Magpul® MOE® AR-15 Lower Build Kit

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Imagine being able to complete your whole lower assembly with a single kit. Now, stop imagining and read this. This kit will do exactly that; it'll turn your stripped lower receiver into a fully functional lower assembly. Yup. That the whole damned bottom half of your AR build. It's got what you need to turn that lower into a finished lower assembly.

We added some mil-spec parts, but we also threw in some kickass Magpul® parts too! Obviously tools are needed, but imagination is not. 

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

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

Mil-Spec Buffer Tube Assembly - AR-15

The AR-15 Mil-Spec Buffer Tube Assembly is manufactured out of 6061-T aluminum, making this product very lightweight and durable. The 3-ounce buffer and carbine coated spring provide a smooth and reliable function. The mil-spec six position receiver extension allows this kit to be compatible with different aftermarket stocks for simple customization. This kit features the following: end plate, castle nut, buffer tube, carbine spring, and 3 oz buffer. 

Additional Features: 

  • Mil-spec dimensions
  • Six-position buffer tube for maximum adjustability of butt stock length
  • Accepts all standard-sized AR type butt stocks

Magpul® Mil-Spec Carbine Stock - MOE®

There's a reason Magpul® is so excellent at what they do. Their parts are insanely rugged, they're as tough if not tougher than that other mil-spec stuff, and on average, they weigh a lot less too. The Magpul® MOE® Mil-Spec Carbine Stock is no different. It's light, it's tough, and it's smart by design. Everything about the MOE® stock is situated perfectly. Its design makes the length adjustment latch both fast and shielded from being accidentally accuated or snagged. See below for all its 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® Grip - AR15/M4

Let's face the truth. The AR-15 for how modular it is and how it can adapt to any situation, falls short in one key area: the grip is bad. Like bad bad. You just can't hold the damned thing the right way and be comfortable at the same time. The angle is just too horrible. The way an AR's OEM grip was angled put soldiers' wrists at a near-extreme angle, and it 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, Magpu®l solves the issue easily with their MOE® AR15/M4 Grip. First, it completely fixes 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. Also, Magpul® made the MOE® grip thicker 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® AR15/M4 Polymer Trigger Guard - MOE® Enhanced

Stop installing that all-too-normal mil-spec trigger guard on every AR you build. The Magpul® MOE® Enhanced AR15/M4 Polymer Trigger Guard is way better than the mil-spec stuff. Why? For starters, it's way more ergonomic and gives your trigger finger a lot more room which is great if you're wearing gloves. Second, it's made from a super strong 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 mess up your lower while you install it. All you need is a hex wrench. See below for more features.


  • Easily installed without specialized tools
  • Ergonomic and enlarged design to accommodate use with gloves or when shooting in cold environments
  • 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.