Otis Technology Vent Hole Scraper for MSR / AR Rifles in .223 / 5.56 Caliber

Fouling can accumulate in the tiniest of places, such as the area where the gas tube enters the upper receiver in an MSR/AR rifle. Prevent oil blowback by properly cleaning this area with the AR vent hole scraper. It easily attaches to the charging handle and provides a quick and easy clean.