GEN 3 UHP-15 Billet Lower Receiver

The GEN 3 UHP-15 billet lower receiver is cut from 7075-T6 billet aluminum on CMT's own machines. The magazine well is machined to a flared, consistent profile that drops a mil-spec magazine cleanly, and the receiver extension threads and pin holes are held to spec so a standard lower parts kit and buffer assembly fit without lapping.

Specification

• 7075-T6 billet aluminum billet
• Type III hardcoat anodize (MIL-A-8625 Type III, Class 2), black
• Flared, broached magazine well
• Standard right-hand controls
• Accepts a standard mil-spec lower parts kit and buffer assembly

Before you build. A stripped lower needs a lower parts kit and a buffer assembly to function. Use a proper vise block; do not clamp on the magwell. Take care with the bolt catch roll pin and the detent springs — those are the two places finishes get scratched during an otherwise clean build.

Transfer and eligibility

This is a firearm receiver. Federal law requires it to ship to a licensed dealer. Enter your receiving FFL at checkout; we confirm the licence with the dealer before the package leaves. You complete the ATF Form 4473 and the dealer's background check in person. Age and eligibility rules are set by federal law and by your state — check both before you order, because a receiver that cannot lawfully be transferred to you cannot be returned for a refund of the transfer fee.