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The only major difference between the 601 and 602 is the switch from the original four grooves, right-hand 1:14-inch (1:355.6 mm or 64 calibers) rifling twist rate to the more common four grooves, right-hand 1:12-inch (1:304.8 mm or 54.8 calibers) twist. This was done as the original 1:14-inch twist rate to just stabilize the 55 grain bullet ...
After Colt's patents expired in 1977, an active marketplace emerged for other manufacturers to produce and sell their own semi-automatic AR-15–style rifles. [1] Some versions of the AR-15 were classified as "assault weapons" and banned under the Federal Assault Weapons Ban in 1994 within the United States. This act expired in 2004. [2] [22]
This page lists more than 100 small arms designs which have been produced in numbers exceeding one million since the late 18th century. Many more types have been made in the hundreds of thousands. Many of the firearms on this list are military weapons which were used during both World Wars , so it is unsurprising that they were manufactured in ...
The early commercial SP-1 AR-15s used a pair of 0.250-inch (6.4 mm) diameter receiver push pins, identical to those found on the military rifles. In 1966 the company replaced the front pin with a paired nut and screw hinge using a 0.315-inch-diameter (8.0 mm) pin to prevent shooters from being able to change receivers with military rifles or ...
ArmaLite AR-15 with the charging handle located on top of the upper receiver, protected within the carrying handle and a 25-round magazine. 1973 Colt AR-15 SP1 rifle with "slab side" lower receiver (lacking raised boss around magazine release button) and original Colt 20-round magazine.
A surge of donations to the newly rechristened Harris for President campaign is upending the 2024 money race yet again. The vice president has amassed more than $100 million in her first few days ...
Old Japanese weapons and other military paraphernalia, c. 1892–95 A Gilbertese shark-toothed weapon (late 19th century). Major innovations in the history of weapons have included the adoption of different materials – from stone and wood to different metals, and modern synthetic materials such as plastics – and the developments of different weapon styles either to fit the terrain or to ...
1999: America Online has over 18 million subscribers and is now the biggest internet provider in the country, with higher-than-expected earnings. It acquires MapQuest for $1.1 billion in December.