Saw this on FB

NOTICE to owners of GMRB’s “Drop-In” barrels:
There is a possibility that the nipple on your rifle is defective. Metric threads were installed on some barrels in place of the proper ¼-28 threads for nipples. These barrels, if affected, will bear a serial number between #030672 and #031352.
If you have a barrel in this serial range and doubt the nipple threads please call Mike Hagar at 603-447-1095 or email mhagar@gmriflebarrel.com to arrange a return, inspection and repair if required.
We apologize for any inconvenience.
Thank you for your support.


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