Army was dissatisfied with the contemporary products on the market. The Picatinny Arsenal was tasked in 1992 to develop a standardized mounting system after the U.S. The rail itself is named after the Picatinny Arsenal in New Jersey, which was named "after the Lenape-named peak overlooking the old forge, loosely translated to mean 'rugged cliff by water' or 'water by the hills'". These were the M16A2 and the M4 modified with new upper receivers where rails replaced hand guards. Specifications for the M16A2E4 rifle and the M4E1 carbine received type classification generic in December 1994. History Picatinny rail dimensions, cross section (dimensions in inches)Īttempts to standardize the Weaver rail designs date back to the early 1980s from work by the A.R.M.S. Once established as United States Military Standard, its use expanded to also attaching other accessories, such as: iron sights, tactical lights, laser aiming modules, night vision devices, reflex sights, holographic sights, foregrips, bipods, slings and bayonets.Īn updated version of the rail is adopted as a NATO standard as the STANAG 4694 NATO Accessory Rail. It was originally used for mounting of scopes atop the receivers of larger caliber rifles.
The Picatinny rail ( / ˈ p ɪ k ə t ɪ n i/ or / ˌ p ɪ k ə ˈ t ɪ n i/), or Pic rail for short, also known as a MIL-STD-1913 rail, 1913 rail or STANAG 2324 rail (cancelled), is an American design rail integration system that provides a mounting platform for firearm accessories. The M4 carbine with a Picatinny rail system, Grip Pod vertical forward grip, and M68 CCO sight
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