PSA 5.7 Rock RK1 5.7x28mm FDE – Optics-Ready, Threaded 5.2 in Barrel, 23+1 Capacity
The PSA 5.7 Rock RK1 stands out with its vented, lightened slide, optics-ready RMSc footprint, and a 5.2 in threaded barrel purpose-built for the 5.7x28mm cartridge. Finished in FDE over a 416 stainless slide with an FDE polymer frame, this full-size, striker-fired pistol pairs a delayed-blowback, fixed-barrel design with steel 3-dot sights and a high-capacity 23-round magazine.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Details: Minor scratches and blemishes are present from prior handling.
What’s Included
- PSA soft pistol case (tan)
- PSA owner's manual
- PSA optics mounting plate(s) with screws (bagged)
- 1x 23-round steel magazine (marked 5.7x28 with witness holes)
- PSA logo sticker
The RK1 variant features a vented, lightened slide with top relief cuts for reduced reciprocating mass. The slide is 416 stainless with an FDE finish, paired with an FDE polymer frame that uses aggressive molded texturing for confident control. Front and rear slide serrations aid manipulation, and an accessory rail supports weapon-mounted lights.
The 5.2 in carbon steel barrel is threaded 1/2x28 and includes fluting, QPQ treatment, an extended profile, and a recessed crown. A 1:9 twist rate supports 5.7x28mm projectiles, and the delayed-blowback, fixed-barrel system is designed around this cartridge for consistent performance.
An optics cut with an RMSc footprint is integrated, and PSA mounting plates with screws are included, with support for RMR/Docter patterns. Steel 3-dot iron sights come installed, with a steel white-dot front and a serrated two-dot rear, and the slide uses Glock-compatible sight cuts.
Capacity is 23+1 using steel magazines, and one 23-round magazine is included. Controls include a reversible magazine release and a trigger safety. This model is made in the USA and configured as a full-size pistol in 5.7x28mm.