No confusion- You are correct. If his rifle is 26" in length or longer he can run a VFG otherwise he can not and should be removed before the ATF and FBI kick his door down and put him away for life. No folding stocks either.
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Have this for sale now - never liked the finish (more of a Colt guy). Still, love how I dressed her here.
https://c1.staticflickr.com/3/2942/3...5c9d0b94_h.jpg
FN M4 Military Collection with Acog ECOS by SoloDallas, on Flickr