Knight's Armament KAC MRE RAS 21166-2 & FF RAS KM21318 – NIB / NOS – GWOT


Several original Knight's Armament rail assemblies available, including the uncommon MRE RAS and three FF RAS free-float rails. New old stock with original packaging as pictured. Boxes show some shelf and storage wear.


1. Knight's Armament MRE RAS – P/N 21166-2 – NIB / NOS


Titusville production, believed to be from the final production period around 2017.


The MRE (Modular Rail Extension), also known as "More Real Estate," provides additional rail space forward of the front sight post. An uncommon and desirable piece of GWOT-era equipment, particularly for M4A1 clone builds.


New old stock, still in factory wrapping, with original box showing storage wear.


$850 OBO shipped


2. Knight's Armament FF RAS Long 5.56mm Free-Float – P/N KM21318 – NIB / NOS (3)


Three original boxed Knight's Armament FF RAS Long 5.56mm free-float rail assemblies available.


New old stock with original packaging. Boxes opened for inspection; rails remain in protective factory wrapping. Original boxes show shelf and storage wear.


$700 each OBO shipped


Additional photographs available upon request.


All prices include shipping. Electronic payment preferred, with no upcharge. Postal money orders accepted. Ships within two days.