The ap5 or apparatus pistol, is a roller delayed blowback firearm based and built off of the original and historic design from the 1970s.The roller-lock platform has been widely respected as the preeminent design for over 50 years.Adopted for use across the globe, no other firearm of its type has been more successful.Action: Semi-AutoCaliber: 9mm LugerBarrel Length: 4.50"Capacity: 30+1Safety: Manual ThumbGrips: Black PolymerSights: Fixed Front/Drum RearWeight: 4.60 lbsStock Material: SyntheticOal: 12.79"Stock Finish: BlackBarrel Length Range: 4" to 4.99"Weight Range: 5 lbs to 5.99 lbs