This special production, one-off, select-fire Colt weapon was done for a local LE Agency.  In addition to the full Reliability Package (RP) mods, this carbine also has a proto-type SA gas block and its front rails (3) machined to accept military rail covers (KAC).  The weapon will be used with ACOG optics only – shown here with back-up folding sights. 

The special gas block came from a development proto-type in our PR6940 project.  The taper pin hole locations were accurately derived from the original Colt folding front sight assy, then precisely machined using custom gages and a special barrel fixture.