The New Gen 2 Glock Conversion Kit is a lightweight and sturdy platform for Glock 20/21 handguns. It has a barrel shroud made of aluminum with a polymer body. The extended stabilizer, which now comes standard, enables one-handed firing for better shooting performance. It also comes with a Velcro® strap fastener which provides a custom fit to any user. MCK is the most cost-effective conversion kit in the world. Fastest assembly/disassembly conversion kit on the market. Improving accuracy dramatically up to 200 yards. MCK comes in two versions, one is a NON-NFA product (with standard long stabilizer brace), and the other is an NFA product (with stock). Flip sites not included. Top Features: No pistol disassembly required – Just place pistol into the kit, lock, and go Ergonomic Finger Groove Grip for more stability Aluminum Top Picatinny rail, allowing a combination of sights and/or optics Side Picatinny rails for mounting additional accessories, i.e… thumb-rests Ambidextrous, fast, and