Muzzle Break Cleaning question.

Does your muzzle brake remove from the rifle easily? I set mine in a coffee can of CLR while I clean the rifle. Wipes clean with paper towel and Q-tips. I used to use elbow grease and the solvent of the day, but CLR cuts right through that crusted carbon.
 
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Use an engine carb cleaner, boretech style cleaner or clr and put it in a something, I use a shot glass, coffee can could work too, and put the rifle, muzzle down in it and let the carbon get soft. Then take a wire brush to it. That really speeds it up. The clr will eat the annodization off given enough time but it does work well.

I do it when ever I notice the silencer scraping over the build up, it gets right crusty.
 
The best thing to do it clean it often. I often see guys spending hours soaking and scrubbing and trying different chemicals.

I just pull mine off after each range trip (mine is a suppressor mount so it gets dirty after just 100-200rds) clean the crown, and clean the brake.
I've found that Sweets 7.62 or a carbon remover work awesome.

I can pretty much just drizzle some sweets on, give it a quick scrub with a nylon or brass brush, make one pass and wipe it off.
 
I use a clean vegetable can, fill it most-way with a mix of Odorless Mineral Spirits and Hoppe's Oil (much more spirits than oil), and stand the rifle up muzzle down in the can overnight. The next day, the crud is pretty much all softened up and should wipe away easily. Repeat if needed. The area involving the barrel crown is where the most accuracy gain (if any) will come from. The oil penetrates and should provide good corrosion protection. Wipe it 'dry' before use or storage. For cleaning prior to long term storage, mix in a little white petroleum jelly.

Let time and the solvent do the work.

Greg
 
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