The Sig Sauer 716 Patrol tactical rifle is chambered for the effective 7.62 NATO cartridges and features a hammer forged barrel with a 1/10 twist rate. To add corrosion resistance and durability, Sig chrome-lined the 716’s chamber and bore. The rifle barrel’s threaded in the 5/8 x 24 pattern; it will accept most aftermarket flash hiders and muzzle brakes. The Sig Sauer 716 Patrol has four gas settings: an off position, a suppressed position, a normal operating position and an overgassed setting. The latter is handy for underpowered ammo or heavily fouling. You can access the gas system’s parts through the front of the gas block. Unlike some competing piston designs, you don’t have to remove the 716’s rail to clean the gas parts. The 716’s lower receiver is milled from aluminum with QD sling swivel sockets machined into the left and right sides. The bolt and carrier on the Sig Sauer 716 Patrol are massive chunks of machined steel. This is a lot of rifle for the money. You get a clean-running short-stroke pushrod operating system and the ability to hit targets at distance with accuracy.