The Palmetto State Armory (PSA) PA-15 Multi is an American-made, semi-automatic AR-15 style rifle or lower receiver stamped with "MULTI" as its multi-caliber designation (typically chambered in 5.56 NATO / .223) Like new condition!!  Includes clothe case and Magpul adjustable stock.
Key Specifications & Features
Receivers: Forged 7075-T6 aluminum upper and lower receivers with a hardcoat anodized finish.
Caliber Designation: Marked "MULTI" on the lower receiver to accommodate multiple calibers depending on the upper assembly used (5.56 NATO, .223 Rem).
Barrel: Commonly features a 16-inch M4-profile barrel made from 4150V Chrome Moly Vanadium steel with a corrosion-resistant Nitride finish, a 1:7 twist rate, and a carbine-length gas system. 
Bolt Carrier Group (BCG): Full-auto profile carrier with a Carpenter 158 steel bolt and 8620 steel carrier.
Furniture & Options: Available in various configurations—ranging from traditional A2/M4 handguards and stocks to upgraded Magpul (MOE, EPT triggers) or free-float M-LOK rail setups.
Weight & Length: Typically weighs around 6.5 to 7 lbs with an overall length of roughly 32 to 35 inches (with an adjustable stock).
Warranty: Backed by Palmetto State Armory's full lifetime warranty.