Seeking help: Identifying the correct Barrel Nut for this AEG handguard
I'm having a hard time finding a replacement barrel nut for my handguard, and I'm hoping someone here can point me in the right direction.
The Setup:
Zion Arms R15
Handguard: A URX 4 / OCTARMS style rail that uses a 4-bolt side-clamping system (two screws on each side).
It is identical to the one shown in this video
I have tried several standard barrel nuts (like MK18 or URG-I styles), but they don't work because:
They have teeth or grooves. This handguard needs a completely smooth, cylindrical surface for the 4 screws to clamp onto.Many high-end nuts are GBB/Real Steel spec (Imperial), while I need AEG spec (Metric).
Does anyone know the specific brand or part number for this smooth-surface AEG barrel nut? I’ve heard ARES OCTARMS might be the one, but I want to confirm if there are generic versions or specific shops that sell them as spares.