Palmetto State Armory PA-10 Gen3 .308 Win AR-10 Rifle, 20 in Stainless Threaded Barrel, Free-Float M-LOK, Magpul STR Stock
This PSA PA-10 Gen3 stands out as a recent .308 Win configuration with a 20 in stainless, threaded barrel and a free-float M-LOK handguard. It features a flat-top Picatinny upper, a Magpul STR adjustable stock, and a two-stage trigger. The factory box label dated 03/13/2026 documents the exact setup, and the rifle is in excellent condition with a bright, clean bore.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minor handling marks are present from previous use. See photos for close-ups and overall finish.
What's Included
- 1x 20-round Magpul PMAG LR/SR pattern GEN M3 polymer magazine (7.62x51)
- Angled polymer foregrip (installed)
- M-LOK Picatinny accessory rail sections installed on handguard
- PSA factory cardboard box (label shown)
The 20 in stainless barrel is marked '308 WIN 1/10 PALMETTO' and is threaded at the muzzle. The 1:10 twist rate supports a broad range of .308 Win loads, and the mirror-bright bore condition reflects careful prior handling.
The flat-top upper receiver provides a continuous Picatinny rail and includes a case deflector and ejection port cover. The rifle uses a semi-automatic, direct-impingement operating system with a two-stage trigger and a manual safety selector.
An aluminum free-float M-LOK handguard reduces contact with the barrel and includes an integral QD sling socket. Installed M-LOK Picatinny sections and an angled polymer foregrip add mounting flexibility and control without adding unnecessary bulk.
This PA-10 Gen3 accepts SR-25/LR-308 pattern magazines and is stated at 20+1 capacity. One 20-round Magpul PMAG LR/SR GEN M3 magazine is included.
Receivers are aluminum with a matte black anodized finish, matched by a Magpul STR adjustable polymer stock with an 11.5 in length of pull. Made in the United States, this example is documented by a PSA factory label dated 03/13/2026 identifying the configuration.