Custom PSA PA-15 5.56 NATO AR-15 Rifle with 16 in Rosco 4150 1:7 Barrel, Aero Precision R-ONE M-LOK Handguard, B5 Stock, Threaded Barrel, and 3x 30-Round Magazines
This PSA PA-15 stands out as a custom-configured AR-15 built on a Palmetto State Armory PA-15 lower and paired with quality, name-brand components. It features a Rosco 16-inch 4150 steel barrel with a 1:7 twist, an Aero Precision R-ONE free-float M-LOK handguard, and B5 Systems furniture in a camouflage finish. A flat-top upper with a full-length Picatinny rail and an A2-style flash hider complete a practical, feature-rich configuration, and it comes with three 30-round magazines.
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: Faint cosmetic marks are visible on exterior surfaces from light handling. These superficial marks do not affect the rifle's structural integrity or operation. Please review the photos for a complete depiction of the firearm.
What's Included
- Palmetto State Armory PA-15 5.56mm NATO semi-automatic rifle (custom configuration as described)
- 3x 30-round polymer magazines (mix of Hexmag and Magpul PMAG as shown)
The build centers on a Rosco 16-inch 4150 steel barrel with a 1:7 twist and a threaded muzzle capped with an A2-style flash hider. A low-profile set-screw gas block supports the direct-impingement action, combining proven function with a clean, practical configuration.
An Aero Precision R-ONE free-float aluminum M-LOK handguard provides a rigid, lightweight mounting platform. The flat-top upper includes a full-length Picatinny rail, forward assist, brass deflector, and ejection-port cover, offering a versatile, duty-ready feature set.
B5 Systems furniture rounds out the rifle, including an adjustable carbine stock and a polymer pistol grip, both in a camouflage finish. The listed length of pull is 14.5 inches, providing adaptable fit and handling.
The aluminum receivers wear a hard-anodized finish. The lower is marked "PA-15 MULTI" and "Palmetto State Armory West Columbia, S.C." The rifle accepts STANAG-pattern magazines with a typical capacity of 30+1 and uses a manual safety.