Needs improvement
I ordered this brush for my sniper team at work to clean the chambers and locking lug recesses of the MK-11/SR-25 rifle. The plastic bristles are great since they spring back to life after getting worked in the chamber, but unfortunately, the wire that holds the bristles is too soft. The necessary twisting action to scrub the chamber will either untwist the wire, or overtighten and eventually break it off in the chamber. It needs a tough wire that can hold shape under moderate torque from the chamber rod.

