The Winchester Model 100 is distinctive among semi-automatics, as it has a one-piece stock in the manner of a bolt rifle. The design is similar to Winchester's Model 88 lever-action rifle, which was in production at the same time.
The Model 100 was initially only sold in .243 and .308 calibers, but a limited production of .284 calibers was later added. Some identification information can quickly be gained by looking at the stock. Rifles produced prior to 1964 have a cut checkered pattern, while the pattern after 1964 is more reminiscent of a basket weave. The .284 calibers have no pattern whatsoever. In all cases, the rifle weighs 7.5 pounds, and the barrel is 22 inches long.
A recall on all Model 100 rifles was issued by Winchester in 1990 due to a faulty firing pin. At the time, Winchester offered to take back the rifles for free repairs through its dealers or to send a replacement firing pin along with a gift card to cover the cost of installation when the faulty pin was returned along with a valid serial number.Learn more about Outdoor Adventure