The Otis MSR/AR Cleaning Kit (Otis part no. FG556MSR) is built for 5.56mm rifles that need a quick, effective clean in the field or a thorough one back at the bench. Otis Technologies packaged the kit in a lightweight soft pack with a belt loop for convenient carrying, and included 8-inch and 30-inch Memory-Flex cables for proper breech-to-muzzle cleaning. A bronze bore brush and Mongoose G2 brush handle copper deposits and other fouling, while specialized precision tools take care of a complete breakdown and fine detail cleaning. Otis Bio CLP lubricates and protects the barrel, and a dedicated B.O.N.E. Tool cleans bolt carrier assemblies more effectively than a standard brush alone.

Key Specifications

• Sized for .223 Rem/5.56 NATO rifles, matching brush and cable dimensions to the caliber.
• Includes both an 8-inch and 30-inch Memory-Flex cable, covering both quick field cleans and full breech-to-muzzle service.
• Includes a Mongoose G2 brush alongside a standard bronze bore brush for stubborn copper fouling.
• Includes a dedicated B.O.N.E. Tool for cleaning bolt carrier assemblies more effectively.
• Housed in a Nylon soft pack case with a belt loop for convenient field carry.
• Styled as a Rifle-specific kit, purpose-built for MSR/AR platform maintenance.
• Ships at roughly 0.985 lb., substantial enough to hold the full tool set securely.

Frequently Asked Questions

Can this kit handle a full bolt carrier group clean? Yes, the included B.O.N.E. Tool is designed specifically for cleaning bolt carrier assemblies.

Is this kit meant for field use or bench use? Both, with an 8-inch cable for a quick field clean and a 30-inch cable for a thorough bench cleaning.

What caliber is this kit sized for? It’s built for .223 Remington/5.56 NATO rifles.

Buy the Otis MSR/AR Cleaning Kit

Keep your AR platform rifle running clean with a purpose-built kit from Otis Technologies. Browse more gun cleaning kits and supplies and order from our Lubbock, Texas gun shop for fast, reliable shipping.