Nerf Tactical Triad
thingiverse
Untested: I lack a 3D printer, which means I'm unable to test and revise, please if printed leave any complaints or suggestions in the comments. Requires four 4-40 x 1-1/4" (or longer) screws along with some locking hex nuts. First, use the printed parts as a guide for drilling two 1/8" holes into the top of your Triad, then simply attach it so that it clamps down onto an available rail segment.
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