PSA MOD PX9 AR-9 Pistol 9mm, 4 in Barrel, Law Tactical Folder, Lantac Dragon, Upgraded Flat Trigger, MBUS Sights, SB Tactical Brace
This Palmetto State Armory MOD PX9 is a customized AR-9 pistol built around a 4-inch, threaded 9mm barrel and a direct blowback action. Notable upgrades include a Law Tactical folding adapter, a Lantac Dragon muzzle device, and a flat-faced upgraded trigger. It ships with Magpul MBUS flip-up sights installed, uses Glock-pattern magazines, and includes one compatible 33-round Glock-pattern magazine plus two Smith & Wesson M&P-pattern steel magazines that are not compatible with this Glock-mag lower. The slick-side upper, free-float M-LOK handguard, and integral 1913 top rail make this compact 9mm setup clean and purpose-built.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Marks from prior handling and use are present. The receiver has a name engraved. We recommend changing to a longer muzzle device, as the one installed may be unsafe to use in the firearm's current configuration. Use at your own risk. Please refer to the photos.
What’s Included
- Palmetto State Armory cardboard box
- PSA Pistol AR15 manual
- Magpul MBUS flip-up sights (front and rear), installed
- Law Tactical AR folding stock adapter, installed
- SB Tactical pistol stabilizing brace, installed
- Flat-faced upgraded trigger, installed
- Magpul pistol grip, installed
- Muzzle brake/compensator (Lantac Dragon), installed
- Magazines: 1x 33-round Glock-pattern magazine (compatible with this pistol) and 2x Smith & Wesson M&P-pattern steel magazines (not compatible with this Glock-mag lower)
The MOD PX9 platform uses a direct blowback action with a slick-side upper featuring an open ejection port and no forward assist. An integral 1913 top rail runs across the receiver and handguard for mounting sights. The bolt is marked "G4-9."
Key upgrades include a Law Tactical folding adapter at the receiver extension and an SB Tactical brace. The Law Tactical hinge features a QD socket and "CLOSE BEFORE FIRING" marking, providing a compact fold for storage and transport.
The 4-inch threaded barrel is fitted with a Lantac Dragon muzzle device. The free-float aluminum M-LOK handguard offers accessory slots, and Magpul MBUS flip-up sights are installed. Controls include a manual safety and a flat-faced upgraded trigger for a clean, consistent press.
This pistol is Glock-pattern magazine compatible, with a stated maximum capacity of 33+1. The lower is marked "PALMETTO STATE ARMORY • WEST COLUMBIA SC" and "CAL 9MM • MOD PX9," aligning with PSA’s PX9 specification set.




