The 
Tokyo Marui Colt Government Mark IV Series '70 (Nickel Finish)
 is a high-fidelity gas blowback airsoft replica of the iconic 1970s civilian M1911. It is highly regarded by collectors for its brilliant mirror-like glossy chrome plating and realistic hand-engraved slide markings.
 
Key Performance Specifications
According to TokyoMaruiAirsoft.com and AirsoftGuns-Europe.com, the pistol features the following technical details: 
Muzzle Velocity: Approximately 275–295 FPS (using 0.20g BBs).
Magazine Capacity: 26 rounds (die-cast, glossy chrome plated).
System: Gas Blowback (GBB) with semi-automatic firing mode.
Dimensions: Overall length of 218 mm with a 112 mm inner barrel.
Weight: Approximately 812–823g with an empty magazine installed. 
Build and Aesthetics
Nickel Finish: Impeccably crafted with a glossy chrome coating on the slide, frame, and outer barrel to replicate a real nickel finish.
Realistic Engravings: Slide markings are meticulously hand-engraved after molding to match the real firearm's process, featuring unique serial numbers.
Woodgrain Grip: Features a wood-grain finish (high-quality polymer) with non-slip checkering and a gold Colt medallion.
Authentic Parts: Faithfully reproduces the '70 series characteristic barrel bushing, spur hammer, and grip safety in a glossy silver finish.