Excellent quality handguard, slim but robust 
M-lok slots on top, bottom and both sides for easy mounting of accessories
NO Sharp edges, fully deburred
Cut away pic rail for easy handling 
1.5 outer diameter 
1.375 inner diameter 
Hard Black Anodize
Includes barrel nut and hardware
 
Many slim handguards are made from such thin material that the shooter is exposed to the hot steel of the gas block when shooting. Not true with this handguard, it is thick and still lightweight. NO burnt hands here!