As the world of pistols chambered in the hot 5.7×28 cartridge expands, rifles chambered in the same are sure to follow suit. But sometimes, conversion kits and other out-of-the-box solutions are more practical than reinventing the wheel with a new firearm platform. No stranger to pushing the envelope with innovative firearms and kits, Kel-Tec Firearms of Cocoa, Florida has released the R50 Defender rifle kit to convert your existing P50 pistol into an SBR (with NFA approval).
- Model: R50 Defender Kit
- Caliber: 5.7x28mm FN
- Capacity: 50 rounds
- Barrel Length: 9.6 inch
- Overall Length: 25.2 inch
- Muzzle: 1/2×28-inch threaded
- Weight: 5.3 lbs.
The P50 is Kel-Tec’s flagship 5.7 pistol. It comes with a 9.6-inch barrel, which allows you to get the most out of the 5.7x28mm cartridge without being onerously long. It uses 50-round FN P90 magazines for maximum firepower out of a small package. But that package might just be too small and too much fun to wield like a handgun. Now Keltec is offering the R50 Defender rifle kit to convert your existing P90 pistol into a short-barreled rifle (SBR) after the necessary NFA paperwork has been filed and approved.
The R50 Defender is the SBR successor to the standard R50, which uses a 16-inch carbine-length barrel and a collapsable stock. The R50 Defender kit comes with the same stock setup to mount onto the pistol, giving you a third point of contact when you are shooting. But when collapsed, the R50 Defender is no less compact. If you have a P50 but want to make it a bit more practical, consider the R50 Defender rifle kit to make it happen.
