The Model 178BS, Black Synthetic Stock breech loading projector, is an
air driven projector designed for the person who has limited or
occasional use for an immobilizing projector. Its design is simple yet
effective. Stock and Action – Benjamin Sheridan. Overall Length – 41 in.
Dart Barrel – .50 caliber Smooth Bore. Sights – Open. Weight – 7 Ibs.
Range – 2 feet to 40 yards with 1 cc Type ‘P’ disposable RDDs controlled
by number of strokes when pumping air into gun and knurled power control
knob on valve on bolt. Minimum – 1 pump; Maximum – 10 pumps.