Precision-machined aluminum end cap gives a handguard a clean, finished look.
Both models accommodate barrels up to 1" O.D. Attach to handguard quad rail with four hex head screws.
Fits all standard diameter omega mfg handguards for AR15 with conventional mounting systems. Will not work with the slim, super slim or ultra super slim rails. Those rails do not use an end cap due to the smaller size. Will not work with our AR10 size rails
Inside= 1" and Outside= 1 & 3/4"