same front sight assembly—a semi-shrouded round threaded post adjustable for windage and elevation zero (similar to the M16 front sight). Accessories The Stoner 63/63A is supplied with several accessories, including: a blank-firing attachment (BFA), winter trigger guard, asbestos-lined spare barrel bag, cleaning kit, 40 mm grenade launcher, several types of slings and a wide range of belt box and magazine pouches. The Stoner 63/63A used three different types of bayonets: the standard U.S. M7, the KCB 70, developed specifically for this rifle by the West German company Eickhorn-Solingen together with NWM and a rare bayonet made by the Swiss industrial conglomerate SIG. The KCB 70 features a long Bowie blade with a clip-point and an integrated wire-cutter, it was inspired by Soviet bayonets for the AKM. A highly successful multi-purpose tool, it evolved into the KCB 77, a modular design that was adapted to many different assault rifles. Variants The Stoner 63 was produced in several configurations, with 15 separate assemblies, which had limited parts commonality. These variants included a carbine, an assault rifle, and various light machine guns feeding linked ammunition from the left or right. The gas system was mounted in different positions depending on the weapon's configuration. Due to the multi-role nature of the design the carbine and rifle versions were heavier than comparable weapons of the same type. Stoner 63/63A Rifle: A standard assault rifle fed from below by a 30-round box magazine. Spent cases are ejected to the right. The cocking handle and gas system are mounted above the barrel. Unlike the belt-fed configurations, the Rifle fires from closed bolt. The rifle configuration was field tested by the USMC for a short period during April to June 1964 by a recruit company at MCRD Parris Island, SC and elsewhere in 1967. It was eventually fitted with a lightweight bipod that folded beneath the handguard. Stoner 63/63A Carbine: The Carbine is similar to the Rifle configuration, but with a shorter barrel and a folding shoulder stock. The carbine configuration was field tested by the USMC for a short period during 1967. Stoner 63/63A Automatic Rifle: The Automatic Rifle is an open-bolt rifle fed from a top-mounted, 30-round magazine. The front and rear sights are offset to the left to compensate for the magazine's position. The AR does not have a semi-automatic mode. The automatic rifle configuration was field tested by the USMC for a short period