I bought a Colt OEM A4 stock from Brownell’s awhile back and want to use it for a 20” rifle build. But these don’t come with the top screw in the butt stock or the butt cap spacer.

The only butt cap spacer I can find available is made by someone called Luth-ar LLC. Are these good to go?

I would buy Colt for a Colt stock but I can’t find any.

Thanks for any user feedback...