The wlvrn is desert tech's third-generation semi-automatic bullpup rifle platform.The wlvrn features a, integrated receiver; ergonomic platform and the barrel mounting system is machined integrally into the receiver.This design significantly increases the stiffness of the wlvrn's upper receiver and improves the accuracy of the wlvrn by up to 30%.The wlvrn is the first bullpup that can be converted on-the-go between large and short-frame calibers such as.308 win and 5.56 natoAction: Semi-AutoCaliber: 223 Rem/5.56 NATOBarrel Length: 20"Capacity: 10+1Oal: 30"Weight: 7.86 lbsMuzzle: Ratchet CompensatorReceiver Material: AluminumSights: NoneBarrel Description: Steel ThreadedTwist: 1:7"Barrel Length Range: 20" to 20.99"Weight Range: 7 lbs to 7.99 lbsStock Finish Group: Black