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New build Question

paramil

Sergeant
Full Member
Minuteman
May 8, 2011
404
26
45
My rifle is nearing completion and the gentleman doing the work raised a concern I don't know enough about to show reason for concern or not.

I ordered a Hart number 4 barrel and also had him install a Badger IMUNS on an AICS 2.0 stock.

After installing both he raised the concern that there was only a three piece of paper thick gap between the barrel and the IMUNS. My concern as well as his is: Will this allow for enough barrel expansion during firing without contact between the two?

Any thoughts?