I noticed on the BCM website that there is an advisory for these barrels; full-power ammo is recommended, apparently for reliable functioning. The advisory says to use an H buffer; carbine buffer recommended for lighter loads. This makes me wonder if there might be an issue due to the shorter length of barrel in front of the FSB on the 14.5 middys. It's probably a non-issue (website says the 14.5 mid setup is 'specifically tuned', presumably to avoid any issues) but I am curious about it nevertheless and would like to hear from users on any issues thusfar. Still trying to decide on a middy upper, definitely going BCM but will it be the 14.5/perm A2X, or a 16 LW or standard. Thanks in advance!![]()


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