Actually, my marine mag doesn't have one, and I think it needs one. No pre-drilled/tapped holes exist, and the local (smalltown) smith is about useless. Alternatives? Has any genius figured a way to improve what I have, which is.... point of impact at 50' with slugs is down 2" to 4" at 50 feet, with 4 brands/lengths of slugs, and 60% of 3 sizes of buckshot pattern on same side. All suggestions welcome. Thanks.
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