View our Ruger AR556 Black AR15. NATO 16. 1inch 30Rd at GrabAGun. Shop our excellent selection of the best Assault Rifles online. Continuing our DIY AR15 Build, today well be installing the Gas Tube and FMarked Front Sight Base onto our Bravo Company 14. Barrel and nearly complet. Carry Handle Assembly. Carry Handle Thumb Nut Assembly Clamping Bar Cross Bolt Rear Sight Elevation Spring Rear Sight Elevation Spring Pin Elevation Knob. Global Military Gears AR15 Detachable Front Rear Iron Sight Set. Most AR manufacturers offer a no sight option or just sell certain models without sights since. We have finally hit another page of history that includes Colt M4s for sale to consumers. They are truly elegant rifles with the same military markings at the miltary. GGG is an established manufacturer of tactical rifle accessories. We specialize in AR15, M16, and Remington Shotgun parts for military, police, and sporting. Slim, lightweight, hand held, shoulder fired, gas operated, air cooled, magazine fed, AR15.