If stiffness is priority, I'd look at options from Geissele (proprietary nut) or Centurion (Standard AR nut).
I love my BCM rails, and wouldn't swap them out. But the two above are crazy solid.
The BCM QRF has the best profile. Geiselle doesn't make a full pic rail, so I'm stuck with some worthless Mlok slots. Centurion would be perfect IF the bottom rail wasn't so tall. (I like the KAC and DD mk rail heights best by far)
Last edited by markm; 12-09-22 at 09:15.
"What would a $2,000 Geissele Super Duty do that a $500 PSA door buster on Black Friday couldn't do?" - Stopsign32v
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