For mine, my Bravo’s backbone appears to be more “skeletonized” than the OPs, along with also missing the treaded hole that he marked as “A”. So instead of tapping into the thin aluminum of the Bravo, I just drilled two holes in the Bravo and used two 10-32 x 1/2 button head screws. That’s the size that fits my version of the MPA spigot. Newer models may be different.
I appear to have the same version of the MPA Spigot as the OP.
The hole marked with green already existed in the Bravo. The screws marked with red, I had to drill a hole through the Bravo for them to go through. The screw marked with a red “x”, I had to chuck the screw into my drill an remove some material to reduce the head’s diameter so it would fit in this odd pocket. My hole is drilled at the bottom of the existing pocket.
View attachment 7125132 View attachment 7125136 I removed the pic rail from the spigot an found that the sling stud that came with the Bravo just to happened to be the same thread pitch. This allowed me to mount my Harris directly to the spigot without having to purchase a pic adapter. It is very slightly pitched up, but it’s not enough to actually make a difference. Surprisingly, the bipod is still able to cant as well, even though it looks like it would contact the polymer of the Bravo. In fact, the bipod never touches the Bravo during any range of motion, though it does come close.
From my measurements, the spacing on the spigot should work out for the in-line Harris adapter than KRG makes. I’ll eventually order one and just mount this directly to the spigot rather than the sling stud.
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