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adjustable sight
Adjustable Ranging Telescope (ART) is a weapons sighting system typically used as a military rifle scope which was initially designed for service in the Vietnam War, developed and patented by James M. Leatherwood. It combines a range-finding scale inside of a telescopic sight (scope) with an adjustable cam integrated into the scope's mount. This raises or lowers the rear of the outer sight to compensate for the ballistic rise or fall of the projectile. The cam is preset for a specific cartridge, i.e., the 7.62 mm NATO round. Due to the fact that the range cam is locked to the magnification ring, the range is automatically set, and the ballistic fall of the shot is accounted for. This then allows the shooter to place the optic's aiming point directly on the target.
During the Vietnam War, Lieutenant Leatherwood, who already had the patents for his ART system, entered the Army and began working with U.S. Army Ordnance specialists. The combination of the Leatherwood Adjustable Ranging Telescope (ART) with M14 National Match rifles went on to create the M21 Sniper Rifle.
80 rounds fired. Just put the thicker backstrap on it (last pic) which feels great for my grip length and trigger finger placement. Can easily put the stock backstrap back on if you desire.
It's been babied and only holstered a few times. Spends most its life on the nightstand.
3 clips plus all...
I am the original owner, purchased new in August of 220. Only 455 rounds fired.
I added a fiber optic front sight, but I am including the original front sight if you want to switch back (easy install in 1 minute). Includes 2 x 10 round magazines.
$316 Venmo, CashApp, or Check/MO. Free ship to...