No, unfortunately it is not. Here's a link to one that would work.
https://www.opticsplanet.com/leapers-utg-standard-ar15-steel-barrel-nut.html
This handguard will mount to the mil-spec barrel nut. There will be mounting brackets and screws included with the handguard.
All Troy handrails attach using your standard G.I. Barrel nut. You can find them for about $15.
No, it is designed for AR-15.
The inner and outer diameters are:
Inner Diameter: 1.25”
Outer Diameter: 1.45”
Mark H.
It depends on the manufacturer of the barrel as manufacturers list their barrel lengths differently than others.