AR15-pattern rifles and carbines perform best with proper cleaning and maintenance, and Otis Technology is a leading source of portable service kits for those, and many other, firearm platforms. The MSR/AR Cleaning System is a comprehensive kit that, in addition to more generic cleaning supplies, includes AR-specific brushes, scrapers and tools for servicing areas and components like the “star” chamber and bolt carrier group. The system even includes the Golden Bullseye Award winning B.O.N.E. tool, all in a small, zippered carrying case.
Watch this week’s NRA Gun Gear of the Week video as Joe Kurtenbach breaks down the kit and demonstrates its utility by cleaning a couple critical components on an AR-pattern rifle. 



NRA Gun Gear of the Week: Otis MSR/AR Cleaning System
by
Support NRA American Rifleman
DONATE
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Interests
New for 2026: Heckler & Koch VPA1 X and VP9A1 Tactical Pistols | An Official Journal Of The NRA
- New Mauser M98 Das Original Bolt-Action Rifle Includes .300 Win. Mag. Chambering | An NRA Shooting Sports Journal
- Beretta’s B22 Jaguar Metal Competition Brings Racegun Polish to Rimfire Steel | An NRA Shooting Sports Journal
- First Look: Daniel Defense Mute & Null Suppressors | An Official Journal Of The NRA










