KWC M45 A1 none Blowback Fixed Metal Slide 4.5mm BB 12g co2 Air Pistol ( KWCKM40DHN ) ( 21 Shot metal BB )

3.0 Joules
1:1 Scale Replica
Fits 12g Co2 Cartridge
Approx 250 shots per cartridge 
under Rail
Extremely strong build quality
Fixed Metal Slide 

21 Shot Magazine