In 1956, ArmaLite designed a lightweight selective fire rifle for military use and designated it the ArmaLite model 15, or AR-15.

ġ973 Colt AR-15 SP1 rifle with 'slab side' lower receiver (lacking raised boss around magazine release button) and original Colt 20-round box magazine Promoted as 'America's rifle' by the National Rifle Association, AR-15 style rifles' popularity is partially attributable to proposals to ban or restrict them. The rifles are controversial in part due to their use in high-profile mass shootings. In the 2010s, AR-15 style rifles became one of the 'most beloved and most vilified rifles' in the United States, according to The New York Times. Īfter the term modern sporting rifles was coined in 2009 by the US National Shooting Sports Foundation, a firearms trade association, it was quickly adopted by much of the industry. The Federal Assault Weapons Ban restricted the sale of the Colt AR-15 and some derivatives in the United States from 1994 to 2004, although it did not affect rifles with fewer listed features. Despite the patents expiring, Colt retained the trademark of the AR-15 and is the sole manufacturer able to label their firearms as AR-15. After most of Colt's patents for the Colt AR-15 expired in 1977, many firearm manufacturers began to produce copies of the Colt AR-15 under various names. The then Fairchild Engine and Airplane Corporation division ArmaLite sold the patent and trademarks to Colt's Manufacturing Company in 1959. The original Armalite AR-15 is a scaled-down derivative of Eugene Stoner's AR-10 design. The part shown bottom center is the lower receiver without the receiver extension, rear takedown pin, and buttstock.Īn AR-15 style rifle is any lightweight semi-automatic rifle based on the Colt AR-15 design. They arrived in perfect condition and ready for my Colt Commando uppers.AR-15 style rifles come in many sizes and have many options, depending on the manufacturer. I purchased two of these M4 SBR receivers and was very pleased with them. Price was fair and shipping was quick! Thanks, AU! Shipped fast and the lower arrives in perfect condition.ĪU was the only place I could find a registered lower. A shame, otherwise they have always been an excellent place to buy from. AU won’t respond to multiple emails asking for the status of that lower or when it might ship. Still awaiting a response on one I ordered a month ago. Ordered 3 SBR lowers, 2 shipped right away.

J Miller from Greensburg, PA United States 1 of 1 people found the following review helpful:Ĭolt M4 Carbine Short Barrel Rifle Lower ReceiverĠ of 0 people found the following review helpful:

Colt ar 15 lower receiver for sale