PSA PA-15 5.56 NATO AR Pistol with FN 15.75 in Barrel, Geissele MK8 13.5 in M-LOK Handguard, and SB Tactical Brace
This PSA PA-15 Pistol stands out with an FN-manufactured 15.75 in barrel and a Geissele Automatics Super Modular Rail MK8 13.5 in free-float M-LOK handguard machined from 6061‑T6 aluminum with a 7075‑T6 aluminum barrel nut. It includes an SB Tactical arm brace, a Mission First Tactical pistol grip, and a short vertical foregrip, with a multi-port brake/compensator installed on the threaded muzzle. The flat-top upper features a T-marked Picatinny rail, forward assist, ejection-port cover, and shell deflector. Condition is very good overall with an excellent, mirror-bright bore.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are mild scuffs and scratches present. The dust cover spring tends to slip out of place.
What’s Included
- Geissele Automatics Super Modular Rail MK8 13.5 in M-LOK handguard (installed)
- SB Tactical arm brace (installed)
- Mission First Tactical (MFT) polymer pistol grip (installed)
- Short vertical foregrip mounted to handguard (installed)
- Multi-port muzzle brake/compensator (installed)
- M-LOK Picatinny rail section on handguard (installed)
- M-LOK QD sling mount on handguard (installed)
- 1x 30-round USGI-pattern aluminum STANAG AR-15 magazine
The Geissele MK8 free-float handguard is a premium upgrade that adds strength and adaptability with M-LOK slots at the 3, 6, and 9 o'clock positions, lightening/vent cuts along the 45-degree facets, and a separate M-LOK QD sling mount installed. Its 6061‑T6 aluminum handguard paired with a 7075‑T6 aluminum barrel nut keeps weight in check while delivering rigidity.
The FN-manufactured 15.75 in barrel is threaded at the muzzle and fitted with a multi-port brake/compensator. This pairing offers durable barrel quality with recoil and muzzle movement control from the installed device.
The upper is a flat-top receiver with a T-marked Picatinny rail, forward assist, ejection-port cover, and shell deflector; the upper forging shows an "A" mark. The firearm operates via a semi-automatic, direct-impingement system and includes a manual safety.
Ergonomics are addressed with an SB Tactical arm brace and Mission First Tactical pistol grip, plus a short vertical foregrip attached to the handguard. The pistol accepts standard AR-15/STANAG detachable magazines, with a typical capacity of 30+1; one 30-round magazine is included.
The matte black finish across the receivers and components maintains a clean, uniform appearance. This U.S.-made configuration brings name-brand components together on PSA's PA-15 platform for a well-appointed AR pistol.