The Ginex primers may be around 4 or five 10-thousandths larger compared to the Feds and also your micro would by no means know the real difference. A wee bit off subject matter, but very much relevant, I found Fed SPM’s at Brownells this morning for $89 + haz and https://federal-ar-match-primers39505.blogkoo.com/5-essential-elements-for-federal-205-primers-for-ar-15-51461910