3 prong vs 4 prong? - Fossberg 500 (forum.guncadindex.com)

submitted 1 month ago by GlassHammer@forum.guncadindex.com to c/help@forum.guncadindex.com

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I'm planning a Fossberg 500 (space trench) build and saw under "thick receivers" there's two options. 3 prong and 4 prong. Anyone know what the differences are? I've looked them over and can't tell. TIA!

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this post was submitted on 30 Oct 2025

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