A SIMPLE KEY FOR COLT 16 INCH UPPER UNVEILED

 Truthfully, I wouldn't shoot just one.  Time to move on to a fresh rifle.  Get an LMT or HK if you want army fashion pistons.    Colt has no real interest in aiding you out.  They deserted that venture in advance of their last individual bankruptcy.When staring out an airplane window previous 7 days, I marveled in the various thicknesses of