Description
The Ruger-57 5.7x28mm 4.94″ Black — 2x 10-Round Mags is a lightweight, optic-ready semi-auto pistol built for shooters who want flat recoil and high-capacity performance in a compact frame. Chambered in the fast 5.7x28mm cartridge, this Ruger-57 ships with two steel 10-round magazines and a black nitride finish.
| Manufacturer | Sturm, Ruger & Co. |
|---|---|
| Model | Ruger-57 |
| Material | Alloy-steel barrel, through-hardened billet steel slide, textured polymer frame |
| Compatibility | 5.7x28mm ammunition; accepts separately available optics adapter plates |
| Finish | Black nitride over alloy-steel barrel and slide |
| Weight | Approx. 22.0 oz (unloaded, per manufacturer specs) |
| Condition | New |
- Through-hardened billet steel slide with lightening cuts — Reduces reciprocating mass without sacrificing strength, giving you faster follow-up shots and less muzzle flip.
- Drilled and tapped for optics — Accepts separately available adapter plates, so you can mount your preferred red dot without sending the slide off for milling.
- Integrated Picatinny-style rail — Mount a weapon light or laser directly to the frame for low-light target identification or home-defense setups.
- Inspection port for visible chamber — You can see if a round is chambered without press-checking, adding an extra layer of safety at the range or in a holster.
- Two steel 10-round magazines included — Ruger ships this pistol with a pair of reliable, drop-free mags, so you can load and shoot immediately.
Who it’s for: This Ruger-57 is built for sport shooters who want to run 5.7x28mm without the bulk of a full-size duty pistol. It also works for practical personal protection shooters who value low recoil and the ability to mount an optic and light. If you compete in action shooting leagues that allow 10-round magazines, this package is ready out of the box.
Pros/Cons: Pros — lightweight at 22 oz, flat-shooting 5.7x28mm cartridge, optic-ready slide, two magazines included, affordable price point vs. competitors. Cons — The factory 10-round magazine capacity is lower than the standard 20-round models available in free states, so shooters outside restricted jurisdictions may want to buy higher-capacity mags separately.
| Feature | Ruger-57 (This Product) | Zev Technologies OZ9 | Agency Arms AOS G19 |
|---|---|---|---|
| Caliber | 5.7x28mm | 9mm | 9mm |
| Barrel Length | 4.94″ | 4.49″ | 4.02″ |
| Weight | 22.0 oz | ~25.0 oz | ~24.5 oz |
| Magazine Capacity | 10 rounds (included) | 17 rounds (included) | 15 rounds (included) |
| Optic Ready | Yes (drilled/tapped) | Yes (RMR footprint) | Yes (Agency AOS system) |
| Price | $432.25 | $1,100+ | $800+ |
FAQ:
Is the Ruger-57 compatible with standard 5.7x28mm ammunition?
Yes, this pistol is designed to function with factory 5.7x28mm cartridges from brands like FN, Federal, and Speer. It cycles reliably with both 40-grain and 55-grain loads, per Ruger specs.
Can I mount a red dot directly to the slide?
The slide is drilled and tapped, but you need a separately available adapter plate from Ruger to match your specific optic footprint (e.g., RMR, Shield, Docter). The slide does not have a direct-mount cut.
What is the barrel length on this model?
The barrel measures 4.94 inches, made from alloy steel with a black nitride finish. That length helps stabilize the 5.7x28mm round for consistent accuracy at range.
Does this pistol come with a lock or case?
Yes, it ships in a Ruger hard plastic case with a cable lock, two 10-round steel magazines, and the owner’s manual.
Trust block:
✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
✓ 30-day returns
✓ Secure checkout
Browse more: Semi Auto Handguns | 5.7x28mm Ammunition
Last updated: April 2026.
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