Originally manufactured by Olympic Arms as a semi-automatic rifle and later upgraded by Weapons Specialties of Phoenix, Arizona, into a selective fire rifle with functional (but unmarked) full automatic fire mode and pinned-in auto sear. Adjustable post front and A2 profile adjustable rear sight, with an A2 flash hider on a "C MP 5.56 NATO 1/7" marked HBAR profile barrel, bayonet lug, ribbed round handguard, A2 upper receiver with round "bulls eye" forward assist, serrated bolt carrier, checkered pistol grip, and a fixed buttstock with checkered trapdoor buttplate. A black nylon sling is included.

Fine as assembled and upgraded to full auto, with 90% plus factory quality black finish, showing minor pitting or voids on the upper receiver and mild scuffs and wear overall on both the metal and the furniture. The dust cover needs adjustment and the rear receiver pin is tight, otherwise mechanically excellent. NOTE: This weapon is a National Firearms Act (NFA), fully transferable Class 3, which is registered with the Bureau of Alcohol, Tobacco, Firearms and Explosives, (BATFE) under the provisions of 18 U.S.C. Chapter 44 and 27 CFR part 479.