The ideal of the gas gun, or M21 sniper rifle was, you could take off your scope and have a battle rifle.
It worked quite well. You carried your scope (ART Leatherwood) in a container in your ruck. You humped with a M14.
When it comes time to use your M14 in the M21 configuration, you simple mounted the scope, and slipped on the check pad. Took a half a second. Not you got your cheek weld.
But the cheek pay with irons doesn't work.
The Army used a simple heavy sponge type material sewed in a light canvas material, with an elastic band to hold it on the stock. Easy one - easy off.
The Laced on check pads as used on the M1C/D doesn't give you that option.
Kind of hard to see, but I'm using the above described cheek pad on my M21 at the Benning School for Boys (AMU) Sniper School.
