Many types of weapons are used in the U.S. military, but in basic training, you’re required to be familiar with only a few.

The standard barrel length for both the Basic and Enhanced models is 16 1/2 inches. ... Remington supplied a prototype 6.8x43 mm barrel, bolt and magazine for function testing, ...

A Browning Model 1885 falling-block rifle. Rock Island Auction Company. Instead of using a bolt to close the breach end of a rifle barrel, falling block rifles use a squared-off thick piece of ...