The six common types of railsystems for firearms are the Dovetail rail, Weaverrail, Warsaw Pact rail, Picatinny rail, KeyModand M-LOK. Future rails systems will have the option ofcarry power to supply the needs of the increasing electronicsmounted to aid the shooter and/or soldier..
Also asked, what's the difference between Picatinny and Weaver rails?
the basic difference between the weaverand picatinny slot dimension is that the picatinnyhas a slightly wider, and slightly deeper slot. The picatinnyrail also has a standardized spacing of the slots, and theslots typically extend down the length of therail.
Furthermore, what is a weaver style rail? A Weaver rail mount is a system to connecttelescopic sights and other accessories to rifles, shotguns,pistols, and crossbows. It uses a pair of parallel rails andseveral slots perpendicular to these rails.
Also to know, are all Picatinny rails the same?
The Picatinny Rail It's sometimes called a “Pic Rail”and is exactly the same thing as a MIL-STD-1913rail.
What kind of rail is on an AR 15?
Most types are made of aluminum. The most common type isthe quad-rail, which gets its name from the 4 railsthat run the length of the handguard. These rails aretypically designed in the MIL-STD 1913 (picatinny) specification,but Keymod and M-LOK mounting rails are increasinglyavailable.
Related Question Answers
Why is it called a Picatinny rail?
The rail is named after thePicatinny Arsenal in New Jersey, which was tasked in 1992 todevelop a standardized mounting system after the U.S. Army wasdissatisfied with the contemporary products on themarket.Are Weaver and Picatinny rails interchangeable?
One is called Weaver and the otherPicatinny (MIL-STD-1913). These two rails, in manycases, can be used interchangeably. Weaver rails havea slot width of 0.180″ (4.572 mm), but are not necessarilyconsistent in the spacing of slot centers.What is the difference between Picatinny and dovetail?
Weaver rail slots are 0.18" across and there is nostandard measurement for the spacing between the slots.Weaver slots are also smaller than Picatinny slots at .180"(Picatinny rail slots are .206"), and for both of thesereasons, accessories intended for a Weaver rail will fit aPicatinny rail.Is a Picatinny rail 20mm?
I was just told that the standard "picatinny"rail is considered a "20mm" rail. EDITED TOCLARIFY: Yes, a Picatinny rail (AKA MIL STD 1913) isconsidered by many to be a 20mm standard width.What is the width of a Weaver rail?
Weaver rail slots are 0.18” wide and nothaving the standard measurement for spacing betweenthem.Who invented KeyMod?
Eric Kincel, KeyMod inventor and research anddevelopment director for Bravo Company Manufacturing, gave us afascinating look into the behind-the-scenes story ofKeyMod's development.What is a rail on a handgun?
Rail systems on firearms are straightmounting brackets (usually made of strips of metal or polymer) onthe gun's receiver, handguard or fore-end stock to allowsliding/variable-position attachment of optical sights andaccessories such as tactical lights, laser sights, vertical/angledforegrips and bipods.Who owns Weaver scopes?
Weaver is currently USA owned by defensecontractor ATK. Burris scopes come from twoplaces.What is a rail cover?
Rail covers are designed for that exact purpose,to cover over a section of accessory rail or othermounting surface with a grip surface. The primary advantage isincreased comfort. For context, this is what you're covering over:This “quad-rail” handguard has four full-lengthbuilt-in Picatinny-style accessory rails.What type of rail comes with Ruger 10 22?
The Ruger 10/22 Takedown comes with bothiron sights and a "Ruger" rail—Ruger'stake on the Picatinny rail.When was the Weaver Rail invented?
The Weaver rail was invented by WilliamWeaver, owner of sight company W.R. Weaver Co. whichwas founded in 1930. His rail was the first step towards aninterchangeable standard, as most mounts before his were specificto each gun or optic.What does M Lok mean?
M-LOK is a modular locking accessorymounting system that is a direct attachment method for hardmounting accessories to a negative space mountingpoint.What is carbine length?
The carbine-length gas system, combinedwith barrel lengths from approximately 10 to 18 inches, isperhaps one of the most common setups across all types of AR-15rifles. Carbine gas tubes are approximately 7.5inches long, which means the handguards are approximately 6.5 to 7inches long. 
