The KelTec R50 5.7x28mm 16.10″ Threaded Tan 50+1 is a semi-automatic carbine that packs a 50-round magazine into a compact, folding package. Chambered in the flat-shooting 5.7x28mm, this rifle gives you lightweight recoil, high velocity, and serious capacity right out of the box.
| Manufacturer | KelTec |
|---|---|
| Model | R50 |
| Material | Polymer grip, aluminum receiver (per manufacturer specs) |
| Compatibility | 5.7x28mm ammunition |
| Finish | Tan |
| Weight | Approx. 5.8 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- 50+1 Round Capacity – Why it matters: You get a full 51 rounds on tap right from the start, which means fewer reloads during range sessions or defensive drills. That’s a serious advantage when you need sustained firepower.
- Threaded 16.10″ Barrel – Why it matters: The threaded muzzle lets you attach a suppressor, compensator, or flash hider without a gunsmith. It’s ready for quiet shooting or recoil control right out of the box.
- Side-Folding Stock – Why it matters: The stock folds to the side, cutting overall length for storage in a backpack, vehicle, or safe. It makes the R50 much easier to transport without sacrificing a full-length barrel.
- Ambidextrous Controls – Why it matters: Left-handed shooters get the same ease of use as righties. The safety and magazine release work from either side, so no one has to adapt to the gun.
- Picatinny Top Rail – Why it matters: You can mount optics, red dots, or night vision without needing an adapter. The rail runs the full length of the receiver, giving you plenty of real estate for your preferred sighting system.
Who It’s For
This rifle is built for recreational shooters who want a lightweight, high-capacity carbine that’s easy to handle. It’s also a solid pick for first-time buyers because the 5.7x28mm recoil is mild—similar to a .22 Magnum—but with way more velocity and energy. If you’re looking for a plinker that can double as a home-defense tool, the R50 fits that role perfectly.
Pros and Cons
- Pro: 50-round magazine means you’re not reloading every few seconds. Great for range fun and practice.
- Con: The polymer grip feels a bit thin for larger hands. A simple aftermarket wrap or stippling fixes it, but out of the box it’s not as ergonomic as some competitors.
- Pro: The threaded barrel is a nice factory touch—no extra cost for a key feature.
- Con: 5.7x28mm ammo can be pricier than 9mm or .22 LR, so budget for that if you plan to shoot a lot.
Comparison vs Similar Options
| Feature | KelTec R50 | PSA Rock 5.7 Carbine | Ruger LC Carbine 5.7 |
|---|---|---|---|
| Capacity | 50+1 | 35+1 | 20+1 |
| Barrel Length | 16.10″ threaded | 16″ threaded | 16.12″ threaded |
| Weight | ~5.8 lbs | ~6.2 lbs | ~6.4 lbs |
| Stock | Side-folding | Fixed | Fixed |
| MSRP | $758.87 | ~$650 | ~$799 |
FAQ
Is the KelTec R50 reliable with all 5.7x28mm ammo?
Per KelTec specs, the R50 is designed to cycle standard-pressure 5.7x28mm loads. Most factory ammo from FN, Federal, and Speer runs fine. Some lightweight reloads may cause issues, so stick with factory new for the first 200 rounds.
Can I mount a suppressor on the threaded barrel?
Yes, the 16.10″ barrel is threaded with a standard 1/2×28 pattern, which fits most 5.7 suppressors. Just make sure your can is rated for 5.7x28mm pressure.
Is the 50-round magazine reliable?
According to KelTec, the 50-round mag uses a dual-feed design that feeds consistently. Users report it works well when loaded to full capacity, but let it break in with a few cycles before relying on it in competition.
Does the stock lock in both folded and extended positions?
Yes, the side-folding stock locks securely in both positions. When folded, the rifle is about 26 inches long, making it easy to stow in a range bag or backpack.
Over 200,000 KelTec firearms are in civilian hands as of 2025, and the R50 continues that tradition of innovative, high-capacity designs. This rifle gives you a 50+1 round count in a lightweight, folding package—perfect for the range or the truck.
✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
✓ 30-day returns
✓ Secure checkout
Browse more Semi Auto Rifles or check out our 5.7x28mm Ammo selection. Also see KelTec Parts & Accessories.
Last updated: April 2026
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