The Kel-Tec KP50 is a semi-automatic pistol chambered in 5.7x28mm, built around a 9.6-inch threaded steel barrel and a bottom-insert, drop-free 50-round magazine that uses the FN P90 magazine pattern. It ships with a rear Picatinny rail set up for a side-folding brace and a B5 Systems grip, and an optional Jungle Clip lets two 50-round magazines pair back-to-back for 100 rounds on hand. The pistol has no fixed sights out of the box. 
 

Key Specifications 

• Brand: Kel-Tec 
• Model: KP50 
• Caliber: 5.7x28mm 
• Action: Semi-Auto 
• Capacity: 50+1 
• Barrel Length: 9.6" 
• Twist: 1:7" 
• Weight: 3.2 lbs 
• Overall Length: 18.6" 
• Trigger: Single Stage, 6.5 lb pull 
• Finish: Matte Black 
   

Detailed Features 

• Bottom-insert, drop-free FN P90-style 50-round magazines 
• Optional Jungle Clip pairs two magazines for 100 rounds on hand 
• Rear Picatinny rail accepts a side-folding pistol brace 
• B5 Systems grip with an integrated QD sling cup 
• Threaded 1/2x28 muzzle with no sights installed

The KP50 draws a lot of attention because of its 50-round magazine and P90-style reload, and most owners who pick one up are drawn in by that novelty first. Reliability chatter is mixed: many report the pistol running clean once it is broken in, while others mention needing to try a few ammo brands before feeding is fully smooth, which is common with newer Kel-Tec designs.

Ergonomics get generally positive marks. The B5 Systems grip and brace setup make the KP50 comfortable to shoulder for a large-format pistol, and the low bore axis is frequently cited as keeping muzzle rise manageable. Some shooters find the width and shape of the P90-style magazine awkward to carry spares for compared to a standard pistol mag.

On value, the KP50 is seen as an interesting niche option rather than a do-it-all sidearm. Aftermarket support is still growing on this platform compared to more established firearms, and a few owners note the trigger pull feels heavier than they expected.