KelTec has built its reputation on innovation—often releasing designs that challenge traditional thinking. In 2025, the company introduced the PR-57, a cutting-edge pistol-caliber/rimfire hybrid-inspired platform aimed at shooters who want light weight, modularity, and the fun factor of a new-generation sporting rifle. Combining KelTec’s flair for unconventional engineering with practical features for modern shooters, the PR-57 is one of the most intriguing launches of the year.

Introduction: KelTec’s Spirit of Innovation
KelTec has always marched to its own beat—often pioneering folding carbines, compact bullpups, and unconventional pistol platforms. The PR-57 follows in that tradition, blending rimfire ergonomics with centerfire-ready strength and modern accessory compatibility. The result is a platform that appeals to recreational plinkers, personal-defense users, and anyone looking for a light, handy carbine-style rifle chambered in the popular 5.7×28 mm cartridge.
KelTec PR-57 Overview
While the PR-57 carries KelTec’s familiar angular aesthetic, it’s designed with practical shooting performance in mind. It borrows lessons learned from the brand’s rimfire lineup and scales them up to deliver controllable recoil, fast follow-up shots, and reliable operation in a new-generation platform that sits between a PCC (pistol-caliber carbine) and a light intermediate-caliber rifle.
Key Specifications
Specification | Detail |
---|---|
Caliber | 5.7×28 mm |
Action | Semi-automatic, delayed-blowback system |
Barrel Length | 16″ (rifle configuration) with 1/2×28 threaded muzzle |
Overall Length | ~30″ (with adjustable stock extended) |
Weight (unloaded) | Approx. 5.3 lbs |
Frame / Receiver | Lightweight aluminum upper with reinforced polymer lower |
Magazine | 20- or 30-round detachable box magazines (compatible with standard 5.7×28 mags) |
Sights / Optics | Integrated Picatinny top rail for optics; flip-up backup sights included |
Handguard | M-Lok compatible free-float design |
Stock | Adjustable, collapsible carbine-style stock |
Standout Features of the PR-57
Hybrid Design for Fun and Practicality
The PR-57 sits in a unique category—lighter and easier to handle than most centerfire rifles yet offering more energy and range than a typical rimfire. This hybrid appeal makes it a versatile option for target shooting, small-varmint control, and recreational plinking.
Recoil-Tamed Performance
Using a delayed-blowback operating system and the inherently mild-recoiling 5.7×28 mm cartridge, the PR-57 allows for rapid, accurate follow-up shots. This makes it approachable for new shooters and ideal for high-volume range sessions.
Optics-Ready with Modern Accessory Support
The PR-57 features a full-length Picatinny rail for easy mounting of red-dot sights or compact LPVOs (low-power variable optics). The M-Lok compatible handguard opens up accessory choices—foregrips, lights, or lasers—without adding unnecessary bulk.
Suppressor-Friendly Muzzle
The factory-threaded 1/2×28 barrel makes it simple to add a muzzle device or, where legal, a rimfire/5.7-rated suppressor. This enhances the shooting experience by reducing noise and muzzle blast.
Lightweight and Compact
Weighing just over five pounds and featuring a collapsible stock, the PR-57 is easy to transport and maneuver—perfect for recreational shooting trips or for those seeking a compact sporting rifle for limited-space scenarios.

Performance at the Range
Handling and Accuracy
Initial testing by early reviewers suggests the PR-57 delivers excellent off-hand balance. Combined with the mild recoil of the 5.7×28 mm cartridge, it allows for quick transitions between targets and solid accuracy out to 100 yards and beyond—well-suited for steel challenge courses and varmint-control scenarios.
Reliability
KelTec designed the PR-57 to run reliably on a range of commercially available 5.7×28 loads. The delayed-blowback system and robust polymer-aluminum hybrid construction ensure consistent cycling even during extended shooting sessions.
Ease of Use
The ambidextrous controls—magazine release, safety selector, and charging handle—make the PR-57 accessible for both left- and right-handed shooters. Tool-less field-stripping simplifies routine cleaning and maintenance.
Accessory Recommendations
- Red-dot sights such as Holosun 507C or Trijicon RMR
- Lightweight bipods from Harris or Magpul
- Weapon-mounted lights from Streamlight or SureFire
- Sling mounts and two-point tactical slings for better field carry
- Extra factory magazines for extended range sessions
Ideal Uses for the PR-57
- Recreational shooting: The light recoil and easy handling make it fun for long days on the range.
- Small-varmint hunting: The flat-shooting 5.7×28 mm cartridge works well for small game and pest control in appropriate environments.
- Training platform: New shooters can get accustomed to rifle ergonomics without the recoil of larger calibers.
- Compact sporting or truck gun: Lightweight and easy to maneuver with modern accessory support.
Comparisons and Market Position
The PR-57 enters a growing market for carbines and rifles chambered in 5.7×28 mm, competing with models such as the Ruger LC Carbine and certain AR-style PCCs chambered for the same cartridge. KelTec’s offering stands out with its lighter weight, distinctive design, and reputation for affordability compared to many AR-based alternatives.
Maintenance and Care
KelTec engineered the PR-57 for straightforward maintenance. Field-stripping requires no specialized tools, and the polymer-aluminum hybrid construction resists corrosion and reduces overall upkeep needs. Regular cleaning of the chamber and barrel, especially after high-volume shooting, ensures continued reliability.
Final Thoughts: Innovation for the Rimfire-PCC Enthusiast
The KelTec PR-57 blends KelTec’s trademark innovation with the practical demands of modern shooters—offering a lightweight, accessory-ready platform chambered for the increasingly popular 5.7×28 mm round. It’s fast, fun, and adaptable, whether you’re ringing steel, controlling varmints, or enjoying a weekend range session.
By entering the 5.7×28 mm carbine niche with a unique design and affordable package, KelTec once again proves it can push the boundaries of what shooters expect from a sporting rifle.
Disclaimer: Always comply with local laws and safety regulations when acquiring or using rifles. Information provided here is for general educational purposes only.