Kel-Tec SUB2K57BLK: The KelTec SUB2000 chambered in 5.7x28mm offers a flat trajectory and low recoil making it an ideal choice for accurate and controlled shooting. Its simple and reliable blowback design ensures ease of maintenance and consistent performance. The firearm features a 20-round magazine a foldable design for compact storage and a lightweight polymer frame. Integrated M-LOK and Picatinny rails provide full customization options to suit your needs. - Caliber 5.7x28 mm - Weight Unloaded 4.36 - Magazine Capacity 20rd FN Pro Mag - Overall Length 30.45 - Length Collapsed 29.2 - Length Folded 16.15 - Barrel Length 16.15 - Twist Rate 1:7 - Trigger Pull 5 lbs