This is a Glock Striker Fired known as the 45 MOS ( Modular Optics System) chambered in 9MM, FDE Frame, model PA455S203MOSDE.
MANUFACTURER: GLOCK
FAMILY: G45 Series
MODEL: G45 G5 MOS
TYPE: Semi-Auto Pistol
ACTION: Safe Action
CALIBER/GAUGE: 9mm
FINISH: nDLC Finish
FINISH TYPE: Black
FRAME: Polymer Frame
STOCK/GRIPS: FDE Frame
BARREL: 4.02"
OVERALL LENGTH: 7.28"
CAPACITY: 17 + 1
# OF MAGAZINES: 3
MAG DESCRIPTION: 17 rd.
SIGHTS: Fixed Glock Sights
SIGHT TYPE: Fixed Sights
SHIPPING WEIGHT: 3.8 lbs.
SAFETY FEATURES: No Manual Safety
CASE: Plastic
ADDL INFO: Modular Optics System
ADDL INFO: Flared Mag-Well
ADDL INFO: Front Slide Serrations
MFG MODEL NO: PA455S203MOSDE