Some rifles are built to look tactical. The Sig Sauer SIG516 G3 Mohawk is built to be tactical — a short-stroke piston AR-style rifle engineered for the real-world durability and low-maintenance requirements that duty, defensive, and tactical applications demand. The SIG516 G3 runs cleaner, runs cooler, and keeps running when a standard direct impingement rifle would start showing the effects of hard use and high round counts. The Sig 516 Mohawk short-stroke piston system moves gas operation away from the bolt carrier group entirely — eliminating the heat and carbon fouling that direct impingement systems deposit directly into the action with every shot. The adjustable gas piston system adapts to different ammunition types and suppressor use without separate tuning, giving the Sig Sauer 516 the reliability flexibility that duty users need across varied operational requirements. Reduced fouling means longer intervals between cleanings and more reliable function when cleaning has not been possible. The R516G3-556N-16B 16-inch cold-hammer-forged barrel delivers long-term accuracy and durability through heavy round counts without degrading as lighter-profile barrels do under sustained fire. The free-floating M-LOK handguard keeps the barrel completely free from contact pressure that would shift the point of impact while providing a clean, lightweight platform for the lights, lasers, and accessories used in tactical and duty configurations. The Sig 516 G3's fully ambidextrous control layout makes the rifle equally functional for right- and left-handed operators without any modification; the bolt release, magazine release, and safety all work naturally from either side. SIG's Matchlite DUO trigger delivers fast, ergonomic performance with the clean break that serious shooting demands. Find the Sig 516 G3 for sale right here at Scopelist and get a piston-driven AR that earns its place on a duty build. Sig Sauer SIG516 G3 Mohawk 5.56 NATO 16" Bbl Semi Tele Stock MLOK HG Full Ambi BLK Rifle w/(1)30rd Mag R516G3-556N-16B