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2. Rail integration system - Wikipedia

   en.wikipedia.org/wiki/Rail_integration_system

   A rail system mounted on top of a SIG SG 550 A dovetail rail on a rifle receiver for mounting a sight. A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail [1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails ...

3. Picatinny rail - Wikipedia

   en.wikipedia.org/wiki/Picatinny_rail

   Picatinny rail. The 1913 rail (MIL-STD-1913 rail), also known as the Picatinny rail (1913 Picatinny rail etc.) is an American rail integration system designed by Richard Swan [1] that provides a mounting platform for firearm accessories. It forms part of the NATO standard STANAG 2324 rail. It was originally used for mounting of scopes atop the ...

4. List of steepest gradients on adhesion railways - Wikipedia

   en.wikipedia.org/wiki/List_of_steepest_gradients...

   These include simple rail adhesion, rack railways and cable inclines (including rail mounted water tanks to carry barges). To help with braking on the descent, a non-load-bearing "brake rail" located between the running rails can be used, similar to the rail used in the Fell system, e.g. by the Snaefell Mountain Railway on the Isle of Man.

5. Weaver rail mount - Wikipedia

   en.wikipedia.org/wiki/Weaver_rail_mount

   A Weaver rail mount is a system to connect telescopic sights (often via a scope mount) and other accessories to firearms and certain crossbows. [1] It uses a pair of parallel rails and several slots perpendicular to these rails. The later Picatinny rail, developed by the US military, is a development of the key concepts of the Weaver system ...

6. NATO Accessory Rail - Wikipedia

   en.wikipedia.org/wiki/NATO_Accessory_Rail

   NATO Accessory Rail (STANAG 4694) The NATO Accessory Rail (NAR), defined by NATO Standardization Agreement (STANAG) 4694, is a rail interface system standard for mounting accessory equipment such as telescopic sights, tactical lights, laser aiming modules, night vision devices, reflex sights, foregrips, bipods and bayonets to small arms such as rifles and pistols.

7. Radio Electronic Token Block - Wikipedia

   en.wikipedia.org/wiki/Radio_Electronic_Token_Block

   Here Bradley Manor of the former GWR is prepared for service on the Cambrian Line, Wales. Radio Electronic Token Block is a system of railway signalling used in the United Kingdom. It is a development of the physical token system for controlling traffic on single lines. The system is slightly similar to North American direct traffic control ...