UL-15 Pistol Lower Build Kit


Everything you need to transform your UL-15 Lower Receiver into a premium pistol lower

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SKU: SCA-UL15-LWRPTS-PST Categories: ,

We want to make things easy for our friends and customers, which is why we assembled this carefully curated build kit of every part you’ll need to turn your stripped UL-15 Lower Receiver into a kick*ss pistol lower. These are the parts we recommend – and run on our own guns – to maximize the performance potential of our UL-15 platform.

This kit includes

  • Gear Head Works Tailhook Mod 1 Pistol Brace
  • BCM Gunfighter Mod-3 Pistol Grip
  • LaRue Tactical MBT-2S Two-Stage Straight Bow Trigger
  • KAK Tailhook Pistol Buffer Tube Kit
  • Strike Industries Enhanced Lower Parts Kit

A few notes on why we selected each of these products…

Gear Head Works Tailhook Mod 1 Pistol Brace
You can’t build an AR pistol without a proper brace, and the Tailhook ranks as one of our favorites. An ultra-light and minimalist solution, the Tailhook provides a rock-solid feel regardless of how you choose to grip or mount your weapon.

BCM (Bravo Company MFG) Gunfighter Pistol Grip
BCM is a proven name in rifle components with a reputation for extremely high quality and durability. Our experience with BCM products over the years have reinforced this opinion and we’re proud to include the Gunfighter grip in our build kit.

LaRue Tactical MBT Trigger
The MBT trigger from LaRue represents one of the best performance-per-dollar purchases that you can make for your AR-15. The MBT sacrifices nothing and performs as well or better than most triggers 3x the price. Meticulously machined out of a solid block of S7 tool steel, it provides a super crisp 4.5lb break (2.5 lb first stage, 2 lb second stage) with a smooth positive reset. Whether you’re a range addict, a doorkicker, or a competitive shooter, we are confident you’ll be impressed with the MBT’s buttery smooth pull and clean break.

KAK Tailhook Pistol Buffer Tube Kit
The KAK Tailhook Buffer Tube was engineering as a perfect mounting solution for – the GHW Tailhook brace. It’s fluted design gives the gun a great custom aesthetic while the included buffer and spring provide worry-free reliability and performance.

Strike Industries Enhanced Lower Parts Kit
It says “Enhanced” in the name… do we even need to go on? Marketing fluff aside, the SI LPK is a great combination of upgraded components that take your rifle from a basic mil-spec configuration up to the level of most top-tier competition rifles. The ambidextrous 3-in-1 safety selector can be configured to operate as a standard 90-deg throw or as a short 60-deg throw which is excellent for quick target engagement and easy re-engagement of the safety after a course of fire. The enhanced mag release and bolt catch have improved surface texture for improved grip while the takedown and pivot pins are precision-machined to add a subtle aesthetic upgrade. All-in-all, it’s a solid collection of parts that won’t leave your rifle looking like it was assembled from a pile of questionable gun show parts.


Weight 48 oz
Dimensions 12 × 10 × 4 in


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