DetailsThe PR-5.7 is chambered for 5.7x28mm and ignites via an enclosed hammer for a delightfully smooth, light and consistent trigger experience. The PR-5.7 weighs about the same as two standard adult hamsters. Compared to more conventional carry pistols, the PR-5.7 feels like it might just float away. The PR-5.7 feeds from an integral, non-removable 20-round magazine that charges from the top via stripper clips. The PR-5.7 will absolutely ruin you to heavy, bulky carry guns.