Nodak Spud Upper on a Anderson Lower

[GRA556]

My true concern is will it shift and affect my zero since it is going on my new sbr(pending) or on my current pistol lower(if need to be) and I'm using irons only so my zero is kinda important along with use of the gas port.

Try it first and if it don't work just get it pinned. Those YouTube links show how to do that yourself. Call that Justin guy I gave you the referral to and he will help you.

[ClassIIIGunsmith]

currently trying to find 6 hole carbine handguards that have the black gloss and I would prefer new manufactured and not used if I can help it.