1:1 Scale .
Recoiling Blowback .
Built-In Hop Up.
Whole Heavy-Weight plastic and Metal inner parts.
This model has obviously function of Injection Port and Hold Open for imitating the operation of real pistol.
STREAMLINE RUBBER GRIP
Recommend you to use the gas exceed 8kg pressure . 

WEIGHT = 866g
LENGTH = 235mm
ENERGY = 0.6 Joule
MATERIAL = HALF METAL
BB CAPACITY = 12 rounds
STANDARD BB = 0.2g 6mm
SILVER NATIONAL MATCH GBB
77 (m/s) / range : 35
254 FPS