Direct impingement is a type of gas operation for a firearm that utilizes gas from a fired cartridge to impart force on the bolt carrier or slide assembly...

felt recoil level similar to that of a full power cartridge. The direct impingement (DI) method of operation vents gas from partway down the barrel through...

carbine. It is commonly called a direct impingement system, but it does not utilize a conventional direct impingement system. In U.S. patent 2,951,424...

Zion-15 is IWI's first M4-styled modern sporting rifle. It uses a direct impingement gas system, has a 16-inch barrel with a 1:8 inch twist, has a 15-inch...

Sturm, Ruger & Co. Introduced in 2014 as an entry-level AR-15 using a direct impingement action, with variants since being released such as the upgraded AR-556...

of firearms manufactured by SIG Sauer. The M400 is an air-cooled, direct impingement gas-operated, magazine-fed carbine that is based on the earlier AR-15...

released by PEO Soldier, the direct impingement system would be replaced only after reviews were done comparing the direct impingement system to commercial gas...

from which it shares many fundamental features, the IAR 6940 uses a direct impingement system rather than a gas piston system. The weapon includes a distinctly...

Reibel machine gun magazines for the original 7.5x54 caliber. The direct impingement gas system was first applied in 1901 to a 6 mm (0.24 in) semi-automatic...

weapon. The semi-automatic mechanism is gas-operated through the direct impingement system. The Egyptian training manual had users use stripper clips...