ar-15/m16 replaces factory bolt use for building custom sporter varmint rifles ... with a host of ammo types models for every shooting application one-piece ... upper receivers the feed ramp is cut for reliable feeding with all types of ammo ... including hollow point and frangible ball roller retention device holds block ... and field-tested specifically for law enforcement personnel who require ... powder and other debris to pass through for uninterrupted cycling hold actuator is ... is of standard colt configuration for easy replacement by any department ... magazine well ensures smooth entry for rapid mag changes and limits rotational ... play steel feed ramp is heat-treated for extra strength and superior wear- ... high-performance bolt assembly designed for extra-long service life complete bolt ...
emergencies multiple-setting aperture for precise accuracy originally ... manufactured under contract for picatinny arsenal the mad multiple ... preset to provide the right elevation for quick short-range engagements or ... 5 500 yards 6 600 yards calibrated for 5.56 nato ammunition with 55-62 grain ... systems folds down out of the way for low-profile storage when not in use ... by approximately ¼ providing a lip for solid thumb contact to deploy the sight ... is wearing gloves locking detent ball prevents the raised sight from ... system that converts flattop rifle for cqb operations or cmp service rifle ... also serves as a mounting platform for acogs and other optics with a base ... or back-up sighting correct height for issue front sight full-length clamping ... grooves on nuts provide extra purchase for hand tightening and slots accept a u.s ...