late 2013 that it had failed to divest itself of the Freedom Arms group and planned to buy out some Cerberus investors. Those who chose to give up their shares would be paid by an unidentified lender. In January 2020, the parent entity, Remington Outdoor Company, announced that it would focus operations on its core hunting and shooting brands: AAC, Barnes, Remington, and Marlin. It also announced that it would no longer produce Bushmaster, TAPCO, DPMS, and StormLake Barrels. In September 2020, in the bankruptcy auction of Remington Outdoor Company, Crotalus Holdings Inc. purchased the Bushmaster trademarks. In August 2021, Bushmaster Firearms Industries, Inc. revived the brand name with a new business headquartered in Carson City, NV. The new Bushmaster business revived XM15-E2S, 450 Bushmasters, ACR, and BA50 brands. Products Bushmaster's firearms, such as the XM-15 line, were offered in a 5.56 NATO chambering with forged aircraft-grade (7075-T6) aluminum receivers. Most Bushmaster barrels were 4150 steel, offered in 1:9 twist rate, and chrome-lined to increase durability. Some barrels were available with 1:7 rifling on special order. Stainless steel or chrome molybdenum barrels were available on certain models. Their name was not related to the Bushmaster autocannon. Bushmaster Firearms originally produced their 'First Generation' rifle using an aluminum lower receiver and a stamped steel upper receiver. This first-generation model used the AK-47 gas system. The recoil spring was within the upper barrel gas system compared to the AR-15/M-16, where the recoil spring is within the butt stock. Originally marketed for police and the military, Bushmaster later changed its unique hybrid version AR-15/M-16 to the standard Colt/Armalite design. Bushmaster chambered the First Generation rifles for the 5.56mm round. Bushmaster First Generation rifles are scarce and collectible. In late January 2008, Bushmaster signed a licensing deal with Magpul, granting Bushmaster the right to produce and distribute Magpul's Masada rifle, renamed the Bushmaster ACR. According to the company, in 2010, Bushmaster began making the ACR available to the civilian market, posting it on its website. Carbon 15 was a lightweight AR15 available as rifles or pistols. It saved weight by using polymer in the upper and lower receivers. Some models also removed the forward assist and the dust cover and used a thinner barrel design to save weight. The Bushmaster Dissipator combined a longer sight radius with a shorter barrel to allow more effective use of the iron sights. Similar modifications sometimes suffered from