Born from the socom pdw solicitation, the maxim defense pdx is designed to handle the fierce demands of the tier 1 community.It dominates close quarter encounters and achieves maximum energy on target.At just 18.75" in overall length, the pdx delivers groundbreaking power and performance in a sub compact platform.At the heart is a patent-pending, maxim scw stock system.This system cuts down the length of the stock to 4".The integrated bcg with interchangeable buffer weights gives you maximum performance and versatility without sacrificing form and functionality.The pdx is also equipped with a maxim hate brake muzzle booster which significantly reduces recoil, decreases the flash signature, pushes gasses and concussion wave downrange.Action: Semi-AutoCaliber: 300 BlackoutBarrel Length: 5.50"Capacity: 20+1Grips: Arid Brown PolymerSights: None, Optic ReadyWeight: 5.11 lbsStock Material: SyntheticOal: 18.75"Stock Finish: Arid BrownBarrel Length Range: 5" to 5.99"Weight Range: 5 lbs to 5.99 lbs