Ruger-57 5.7x28mm Full-Size Pistol, 4.94 in Alloy-Steel Barrel, 20+1 Capacity, Black — Model 16401 (2021, USA)
This Ruger-57 is the standard Model 16401 configuration chambered in 5.7x28mm, built in 2021 and made in the USA. It features a 4.94 inch alloy-steel barrel with a black nitride finish, a through-hardened alloy-steel slide with black oxide, and a 20+1 capacity with a steel magazine. The slide includes front and rear serrations, a lightening window, and is factory drilled and tapped for an adapter plate, while the frame is glass-filled nylon with a Picatinny-style accessory rail. Fiber-optic front and fully adjustable rear sights round out a sighting system built for clarity.
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: There are minor, superficial scratches and blemishes present.
What's Included
- Ruger-branded hard plastic case
- Ruger-57 instruction manual
- 1x 20-round steel magazine
The Ruger-57 operates via a delayed-blowback system paired with an internal hammer and Ruger Secure Action trigger. Safety features include an ambidextrous manual thumb safety and a trigger blade safety, providing user-friendly control without adding complexity.
The 4.94 inch alloy-steel barrel has a black nitride finish and an 8-groove, 1:9 RH twist suited to the 5.7x28mm cartridge. The through-hardened alloy-steel slide wears a black oxide finish and incorporates front and rear serrations, a lightening window, and factory drilling and tapping for an adapter plate (cover-plate screws are present).
The frame is a robust glass-filled nylon in black with a Picatinny-style accessory rail on the dust cover for mounting compatible lights or accessories. Sights consist of a green fiber-optic front and a fully adjustable black rear sight, offering a bright front reference and fine-tunable rear adjustment.
This is the standard Ruger-57 Model 16401 non-threaded configuration with a 20+1 capacity using a steel magazine. The case label present shows catalog 16401 matching the pistol. Note: Ruger case labels commonly round barrel length to the nearest inch; this label may list 5 in, while the factory-spec barrel length is 4.94 in.
Ruger issued a safety bulletin in May 2021 advising owners in certain serial ranges to check the right safety-lever integrity. This example falls within that published check range.