Remington XCR 223 Compact Tactical barrel question

discrota

Private
Full Member
Minuteman
Sep 30, 2008
82
0
44
Central Oregon
Anyone that can measure an XCR compact in 223, I would like to know what the barrel diameter is at the muzzle end is, (I am guessing .820-.830) and how long the un-fluted portion before the crown is. What I am wanting to do is turn down and thread the barrel end 1/2-28 for an AAC SPR/M4 mount and was hoping that I wouldn't be into the flutes to do so. Thanks for any info you may have. Code