The rdb defender is the result of taking the rdb and the rdb survival and mashing them up to forge the perfect 5.56, light-duty, tactical bullpup.Its lightweight, comes standard with an aluminum, m-lok handguard, collapsable stock and 16 pencil profile barrel.Defend your property, your community and your homeland with the most tactically versatile bullpup on the market with the rdb defender.Action: Semi-AutoCaliber: 223 RemBarrel Length: 16.10"Capacity: 20+1Oal: 27"Weight: 6.70 lbsStock Description: CollapsibleReceiver Material: PolymerTwist: 1:7"Barrel Length Range: 16" to 16.99"Weight Range: 6 lbs to 6.99 lbsHand: RightStock Finish Group: BlackMetal Finish Group: Black