- MANUFACTURER: GLOCK
- FAMILY: G21 Series
- MODEL: G21 G4
- TYPE: Semi-Auto Pistol
- ACTION: Safe Action
- CALIBER/GAUGE: 45 ACP
- FINISH: Gas Nitride
- FINISH TYPE: Black
- STOCK/GRIPS: Black Polymer Frame
- BARREL: 4.6"
- OVERALL LENGTH: 7.59
- CAPACITY: 13 + 1
- # OF MAGAZINES: 3
- MAG DESCRIPTION: 13 rd.
- WEIGHT: 29.3 oz.
- SHIPPING WEIGHT: 3.95 lbs.
- SAFETY FEATURES: 3 Safeties
- ADDL INFO: No Fired Shell Case
- MFG MODEL NO: UR21501
- UPC: 764503043697
- FFL: Yes
- Caliber: .45 ACP