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The .450 Bushmaster is descended from the Thumper concept popularized by the gun writer Jeff Cooper.Cooper was dissatisfied with the small-diameter 5.56×45mm NATO (.223 Remington) of the AR-15, and envisioned a need for a large bore (.44 cal or greater) cartridge in a semi-automatic rifle to provide one-shot kills on big-game animals at 250 yards.
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.
The Adaptive Combat Rifle (ACR) is a modular assault rifle formerly designed by Magpul Industries of Austin, Texas, and known initially as the Masada.. In late January 2008, Bushmaster Firearms International entered into a licensing agreement with Magpul whereby Bushmaster would take over production, future development, and sales of the Masada. [5]
450 Bushmaster : Uses .284 Winchester cases. Cut the length to 1.700" to form a straight-wall cartridge, from 2.170". The .284 Winchester case is very similar to the .308, however, the .284 case has a body diameter of 0.500", and the .308 case has a body diameter of 0.471". Both share an identical head/rim.
Jeff Cooper was born in Los Angeles where he enrolled in the Junior Reserve Officers' Training Corps [2] at Los Angeles High School. [3] Cooper then enrolled at Stanford University, where he lettered in fencing, and he graduated from Stanford in 1941 with a bachelor's degree in political science. [4]
Bushmaster ACR, an assault rifle originally designed by Magpul; Bushmaster XM-15, a line of AR-15 pattern rifles and carbines; Bushmaster M4-type Carbine, a carbine in the XM-15 family.450 Bushmaster, a rifle cartridge originally developed by LeMAG Firearms LLC; Bushmaster Protected Mobility Vehicle, an Australian infantry mobility vehicle
"Children respond with increased negative emotion (especially sadness) and lower happiness, and these responses, in turn, increase children's risk for emotional and behavioral problems," says Dr ...
The gun can fire 80 rounds in 60 seconds from its ready magazine, and the ships can carry a total of 450 rounds. The secondary weapon (located at the stern) is a M242 Bushmaster 25 mm cannon in an MSI Defense System DS-25 Seahawk A1 mount. Both guns are automated and are integrated with the Saab 9LV CMS and Saab EOS-500 Electro-optical tracking ...