Grooved Main Spring housing

[Poteen]

I was sorting through my M 1911 parts box (50) year accumulation and found a flat mainspring housing with a single v groove machined up the back.
it has a lanyard loop but no other markings.

My question is, could this be a mainspring housing grooved to accept a cavalry shoulder stock? Looked all over the internet, but couldn't find anything to help me identify it.

I am sorry that I am not including any photos, but my grand daughter is not available at the moment.

Any help identifying this would be greatly appreciated

Poteen

[Doran]

Welcome to the forum. The military experimented with stocked 1911 pistols but none generally issued. At various times private companies have sold stock kits.