COLT UPPER RECEIVER FOR SALE FOR DUMMIES

Thanks, but if I go the DD MK18 route I feel I'll expend the additional $twenty.00 and support Intention (but additionally fork out OH tax).   I did check the G&R web site and tried to insert the Colt uppers into the cart and have the out of stock concept.This feature affords unmatched repeatability for mounting optical devices, not located with d