Original U.S. Colt M4 AR-15 "Rubber Duck" All Rubber Molded Training Carbine - 34" long U.S. Military Maps and an inexpensive barrel

and an inexpensive barrel

and Lieutenant Harris Hull

it also utilized a new design of firing pin

The sword also has an early wooden grip

Crump's Hill April 2

Original U.S. Colt M4 AR-15 "Rubber Duck" All Rubber Molded Training Carbine - 34" long U.S. Military Maps and an inexpensive barrelOriginal Item: Only One Available. This is a very nice Colt Early Pattern M4 AR 15 Military & Police issue non functional RUBBER DUCK training and parade rifle. Unlike the usual ones we see, this example is made entirely from molded hard rubber resin, so there are no original parts used in the construction. The military calls these rifles Rubber Ducks. This is an actual military or police issue trainer designed to be the correct weight and size of an