Features:
Length Optional: 15"
Four military picatinny rails for the installation of flashlight, laser, grip, bipod and red dot scope etc
Inside Dia 46mm (1.8 inch)
Lower rail style with CNC procedure
One-piece style more accurate
T style: the upper rail is extended over the barrel nut for a 'no-gap' monolithic look
Light weight in precision
Easy and quick installation
6061 aluminum alloy in durable black matte finish
Fit most model 4
Shock proof can be used on real fire caliber
