Radian Weapons AX556 Builder Kit Features The Builder Kit is anchored around the Radian A-DAC 15 Lower Receiver a design innovation that integrates additional functionality such as the left-side magazine release. With an 8.50 M-LOK free-float handguard you can be assured of optimal accuracy reduced barrel heat and the flexibility to attach various accessories. One of the standout features of this kit is the Raptor-SD Charging Handle which provides smooth and reliable charging while the Talon 45/90 Safety ensures a quick and positive user experience. Enhanced takedown pins facilitate easier disassembly and the extended bolt catch adds to the ergonomic functionality. Additionally the unique integration of a right-side bolt release ups the ante on rapid reloads and immediate action drills. Radian Weapons AX556 Builder Kit Specifications Brand: Radian Weapons Category: Receiver Sets Model: Builder Kit Receiver Description: Radian A-DAC 15 Lower Gun Type: AR-15 Handguards: 8.50 M-LOK Free-Float Receiver Finish: Radian Gray Cerakote Handguard Finish: Radian Gray Special Features: Raptor-SD Charging Handle Talon 45/90 Safety Selector Extended Bolt Catch Left-Side Magazine Release Right-Side Bolt Release Enhanced Takedown Pins