The a3 tactical modular folding arm brace system for the keltec p50 attaches to the receiver via a unique picatinny adapter by rehv arms. The sig hinge latches in both positions, open and. This will allow a customer to convert their current p50 into a rifle after following the proper rules and regulations with the atf. The keltec p50 is a 5. 7mm pistol caliber carbine that uses 50 round p90 magazines and only weighs 3. 5 lbs. While certainly impressive on paper, let's see how. The keltec p50 rifle conversion kit allows p50 owners to make their big handgun a small rifle. It's a neat design that keeps the retro future stylings. This rifle kit consists of an r50 lower assembly that can easily be installed on any p50 to convert it into a short barreled rifle. The stock is very sturdy and folds. But before we dive into the installation. Keltec’s p50 offers massive capacity at 50 rounds and virtually no recoil in a firearm that’s a bit of a hybrid between a rifle and pistol. Let’s dive into the details and review this. During tfb's gunfest 2021, we had the chance to talk with keltec about their new p50 pistol, chambered in 5. 7x28. Despite its unveiling last month, we were able to ask some of. I noticed that the new keltec brace folds way forward of the farrow tech brace. Could you use the keltec brace as a front hand position like the wwii german grease guns? Found a keltec p50 for about 1/2 of what they were going for last year. Which picatinny rail adapter did you use? Any better than the others? If tax stamps are your thing, sbr the p50. It's so very much worth it. A pistol brace could be a decent facsimile, if you prefer going that route and don't mind losing. The stock is very sturdy and folds. Keltec was at shot show 2022 showing off their p50 nutcracker chambered in 5. 7x28mm. For $300, you can add a carbine kit that includes a fairly legit side.