G23 is a compact version of the standard size G22 (using .40 S&W ammo) which fires the same round as G22. It comes with a smaller frame, a shorter barrel and slide,  also can share the same mags that G22 used.

G23 Full Auto Pistol is not an offical model in G Series. It is a custom made pistol mainly appear in civilian market which allow the semi-auto G23 shoots either in semi or full auto.

Features:
Full Auto Version of G19 GBB with outer barrel compensator (ready for attaching silencer adapter).
Metal Slide with “G23 Tactical” marking and discrete ejector.
Fixed front sight with white dots on the outer barrel and tactical rear sight with white dot.
Polymer Lower Frame with “WE” marking.
Realistic trigger finction same as real steel.
Semi / Full Auto Pistol with blowback action.
Adjustable Hop-up system.
IIncluded 20 rounds G19 Gas Magazine.
Compatible with WE G17/18 25 rds mag and 50rds long mag.
Also Compatible with TM / Stark Arms G17/18 25 rds and 50rds long mag.

Specifications:
Length: 180mm
Barrel Length: ~80mm
Shooting Mode: Safety (Sepearted, under the lower frame) , Semi-Auto, Full-Auto
Weight (g): 690 (Gun with mag), 850 (with box)
Color: Silver, Black
Gas: 8KG (134a), 12KG (Green Gas)
Magazine Capacity: 20 + 1 rds
Material: Metal, Plastic
Bullet type: 6mm BB
Power (Muzzle Velocity): 300 FPS
Manufacturer: WE