Anyone have a 5.56 LMT MARS lower receiver? I’m considering using a stripped MARS L for a pistol build and wanted to know if the bolt catch on the left side of the receiver is a standard mil spec bolt catch or if it is a proprietary piece needed to work with the ambi bolt catch on the right side. Ideally I’d like to use a Geissele Maritime Bolt Catch and have been trying to determine if they are compatible with the MARS. Thanks!
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