Cross Machine Tool UHP15-PDW Integrated AR-15 Lower System

Manufactured by Cross Machine Tool
Manufactured by Cross Machine Tool
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NOTE: Limit 2 per household. Quantities exceeding 2 will not allow checkout.

Standard orders will ship out same day if ordered by 3:30pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to



The Cross Machine Tool UHP15PDW comes with the same features as the ambidextrous model but comes with an integrated PDW stock system already installed. It is a monolithic PDW style telescoping stock that collapses to an extremely compact profile and still has retains the use of a cheek weld. This stock features a patented locking system and features four positions of adjustability. The stripped AR-15 Lower Receiver is machined from a single billet of high-quality 7075-T6 aluminum and then finished with a durable hardcoat anodized finish. Compatible with a wide range of Mil-Spec and aftermarket AR-15 components, you can build exactly what you want. Because it is machined from a billet of aluminum, CMT can customize the outer dimensions for a unique look, while keeping the internal dimensions extremely precise for a tight fit. Also included is a nylon tipped tension screw that will prevent wobble between the upper and lower. The main benefit of this lower is the threaded pins that replace the standard roll pins, so you can quickly finish the receiver without any hassle. Get started on your next build today with Cross Machine Tool.

  • Machined from 7075-T6 Billet aluminum
  • Type III Class II hardcoat anodized finish
  • Mil-Spec Magazine compatible flared magwell
  • Ambidextrous magazine and bolt release
  • Upper tensioning screw
  • Threaded bolt catch assembly screw
  • Compatible with Mil-Spec parts
  • No roll pins necessary for assembly
  • Machined trigger guard
  • Reinforced buffer tube area
  • Monolithic PDW stock with cheek weld
  • 4 positions of adjustment
  • 3.3 ounce buffer and spring

The UHP15 AR-15 Stripped Lower Receiver also features a flared magwell for fast magazine changes and is compatible with all aftermarket mags and drum mags. The integral trigger guard has been enlarged for gloved use and the front of the magazine well is textured if you prefer to grip the magwell when you are running a carbine style rifle. This lower also offers ambidextrous functionality with the integrated magazine and bolt release.

Cross Machine Tool Co., utilizing the latest machining technologies, offers high quality products that you’ll be excited to own. Cross Machine Tool is a veteran owned business that takes pride in manufacturing products you will own. CMT products exceed military standards, so you can build the best AR style rifle possible.
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BrandCross Machine Tool
Caliber MarkingMulti-Caliber
FinishHardcoat Anodized
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

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