In the late 1980's someone developed and marketed a conversion for the gas system of the AR-15 rifle.
It had a replacement/modified front sight assy with a piston system and a front adjustment screw. This pushed an operating rod which replaced the gas tube . The operating rod acted against a modified bolt carrier key that had a rubber cushioning insert in the front section of it.
I am looking for information as to this system, the name of the company, and wether they are still in business - also parts availability.
It had a replacement/modified front sight assy with a piston system and a front adjustment screw. This pushed an operating rod which replaced the gas tube . The operating rod acted against a modified bolt carrier key that had a rubber cushioning insert in the front section of it.
I am looking for information as to this system, the name of the company, and wether they are still in business - also parts availability.