SCooper 0 Posted December 15, 2013 Report Share Posted December 15, 2013 (edited) Has anyone had any issues or Problems with Firebirds High Enery System for the MKA 1919 not having a tight fit in the receiver and thus inables the the barrel move Clockwise & anti Clockwise in the Receiver making the front sight move almost an 1/4 to 3/8 of an inch? Edited December 15, 2013 by SCooper Quote Link to post Share on other sites
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