The magazine for your AR-15 is like a fuel pump for a diesel, if it’s not working right, neither will your rifle. Whether it’s a high-end, boutique build or some clapped-out mil-spec gun, if the ...

The Post’s investigative series on the AR-15’s dominant place in the United States’ marketplace and psyche sat atop the Post website on Monday, the day of its release — until, hours later ...

The Colt AR-15 looked more like a laser blaster than dad’s trusty rifle when it hit the market in 1964. It was made from aluminum and plastic, not the heavier metals and wood used in traditional ...

Without modifications such as a bump stock, an AR-15 can fire about 60 rounds a minute. A 30-round magazine is fairly standard with MSRs but ammunition magazines ("drums") holding up to 100 rounds ...