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4 Posts
I used 10/24 and 4-40 allen head bolts. Drill out the 10/24 head to fit the 4-40 allen head, then cut off threads. Remove existing mag release button, face off head, and tap for 4-40 threads. Screw together with red Loctite. Touch up with black Sharpie marker. Cost for bolts and tap $4.72. 
