PSA Sabre-15 Enhanced Ambi Receiver Set

The PSA Sabre-15 Enhanced Ambi Receiver Set is a matched forged upper and lower, machined from 7075-T6 aluminum and finished in Cerakote so the two receivers tone together. First introduced on the PSA Mixtape Vol. 1 builds, it now sells standalone in six finishes: Champagne, FDE, Burnt Bronze, Black, Moss Green, and Blue Titanium. Because the upper and lower are finished as a pair, PSA offers it as a complete set only, not as separate stripped pieces.

The lower carries the features that earn the Enhanced label. The ambidextrous bolt catch and release ships pre-installed, the same support-hand bolt-release capability builders usually add aftermarket from Radian or ADM. The bolt catch is retained by a threaded set screw instead of the standard roll pin, so the lower detail-strips with an Allen key and no roll-pin punches. The trigger guard is machined as part of the receiver, and the magwell is flared for faster reloads. The set arrives with the ejection port cover, forward assist, and ambi bolt catch already installed; every other interface stays mil-spec, so standard trigger groups, safeties, pins, grips, buffers, and charging handles all drop in.

The upper receiver carries engraved T-marks and is cut for a thermal fit on the barrel extension. One fitment note from PSA: the Sabre-15 Enhanced upper indexes handguards on the front of the upper, so M-LOK rails with anti-rotation tabs designed to overlap the receiver may not fit without modification. The set is marked MULTI for caliber, made in the USA, and covered by PSA's Full Lifetime Warranty.