PSA PA-15 Micro AR Pistol, .300 AAC Blackout, 7.5 in Threaded Barrel, Free-Float M-LOK, SBA3-Type Brace
This Palmetto State Armory PA-15 Micro AR pistol is a compact .300 AAC Blackout build with a 7.5-inch threaded barrel, free-float M-LOK handguard, and SBA3-type adjustable brace. It features a flat-top upper with forward assist, brass deflector, and dust cover, plus PSA-marked lower receiver and Made in USA components. The 1:8 twist is marked on the barrel, and an A2-style birdcage flash hider is installed.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: There are minimal markings from previous handling and use. Please refer to the photos for a close look at surfaces and markings.
What’s Included
- 1x 30-round Magpul PMAG polymer magazine
- Palmetto State Armory AR-15 pistol owner's manual
- Palmetto State Armory factory cardboard box
Chambered in .300 AAC Blackout (7.62x35mm), this PA-15 uses a 7.5-inch barrel with a 1:8 twist rate, clearly marked “300 BLK” and “1:8.” The barrel is threaded and fitted with an A2-style birdcage flash hider. A low-profile gas block and gas tube are visible through the handguard.
The flat-top upper includes a forward assist, brass deflector, and dust cover. A free-float aluminum M-LOK handguard provides a continuous top Picatinny rail and carries the M-LOK logo and “MADE IN USA” marking. The handguard is secured with dual rear cross-bolts for a solid interface.
The lower receiver is marked “PA-15 MULTI” with the PSA crest and “PALMETTO STATE ARMORY, WEST COLUMBIA, S.C.” Controls include a SAFE/FIRE selector and a manual safety. A Magpul MOE pistol grip is installed for a secure, familiar interface.
Built on the AR-15 platform with a direct impingement action, this pistol uses a carbine-length receiver extension. It is equipped with an SB Tactical SBA3-type adjustable brace featuring a QD sling socket and Velcro strap. The receivers are aluminum with a matte black finish, and the configuration is made in the United States.
Capacity is 30+1 with the included Magpul PMAG. The top rail runs the full length of the receiver and handguard, offering ample space for mounting as desired. Sights are not included.




