Bore TechBTCC-35016 C4 Carbon Remover, 16 oz

Follow the simple instructions and carbon stain is easily removed from the bore. At the end of the process and prior to lubing the bore, did a borescope review of the bore. It was amazing to see tiny carbon specs floating off the bore because of course some cleaner always remains until the last dry patch and lube. I've tried many other bore cleaners, some with extremely harsh chemistry, some with warnings of bore damage and health toxic and the C4 product is the most effective, easiest and safest to use.

This works GREAT!!! Awesome product and actually makes the cleaning so much easier. Could not believe the difference it made. I was still old school of dip brush and run a patch through. This was a game changer for me.

Removes all but the hard packed bore carbon. Pricey though for a water based cleaner

The media could not be loaded. I’m a big fan of Bore Tech’s other cleaners like their Eliminator and Rimfire Blend. I use their C4 Carbon Remover for stubborn jobs like carbon rings, AR bolts, and muzzle devices.I recently got a high end rimfire bolt gun and between scope zeroing and barrel tuning I shot 150 rounds in one sitting. I got home and scoped the bore to see how dirty the chamber and bore got and how bad the carbon ring was.Based on my other rimfire bolt gun I’ve gotten great results with a 10-minute soak, dry patch down the bore, another 10-minute soak, then one final dry patch. I haven’t needed to hit the chamber or leade with a nylon brush to completely remove the carbon ring.This stuff simply works with minimal effort on your part. Plus it’s odor-free.

This review is going to be the same for all 3 Boretech products I ordered as part of their system. C4 Carbon Remover, Eliminator Bore Cleaner, and CU+2 Copper Remover:I don't enjoy cleaning guns, and tend to neglect them because of the time it takes to clean semi-auto DI guns, guns fired suppressed (nasty), and proper barrel cleaning of precision bolt guns. I will sometimes spend 3 hours on a barrel removing carbon fouling and copper if I do the entire regimen. I hate it.I've been using a bunch of different flavors of solvents, copper removers, bore scrubbers, etc. Everyone kept mentioning Bore Tech this, Bore Tech that, whatever, I said. I was given some Amazon gift cards at work, and decided to finally try them out.I just took a 750 round defensive carbine class, which I shot entirely suppressed out of an LWRC SBR. As many know, suppressed shooting deposits a lot of carbon everywhere regardless of the fact that it's a piston-driven gun. I was dreading the cleaning process but decided to wait on the Bore Tech products to arrive.I started by putting some C4 Carbon Remover on a patch and began working it into the BCG, inside the upper receiver, and barrel extension. I wasn't planning on cleaning the barrel, so I just took a chamber brush and soaked it in C4, gave it a few turns in the chamber, and grabbed a rag to wipe off the upper receiver. I wasn't expecting much, since I normally have to scrub with brushes and elbow grease. The rag came off black and removed every last bit of carbon just by wiping it off. I couldn't believe how effective it was. The carbon was just melting off. I cleaned the entire gun with just patches, q-tips, and a rag in less than 15 minutes. At this point, I decided to clean the muzzle, which consists of a Surefire CTH Warcomp and a carbon-locked suppressor. Since I'm not at the range at this point, I can't shoot off the suppressor, and it's locked in tight. I dribble a bit of C4 on the mount area, and within a couple of minutes, the can just slides right off. I finish clean the carbon off the muzzle device and decide to go full-retard and do the barrel as well.I started the barrel with one patch soaked in C4 to saturate the bore, then followed by 10 strokes with a nylon brush. Patch out the absolute blackness that comes out until patches are fairly clean. About 5 patches in my case.I repeat the process with a patch soaked in Eliminator Bore Cleaner. First patch comes out blue, as do the next 10 patches. (I haven't even started using the CU+2 yet). I repeat the process with Eliminator one more time, and patches are coming out clean.I decided to de-copper as well, since I'm already here. I repeat again the same soak, brush, patch process with CU+2 Copper Remover and patches are showing just a slight hint of blue. (I use nickel-coated jags, so no false positives from the jags) I end with another wet patch of Eliminator just to clean out the copper remover (no ammonia, so I don't think this step is necessary) and dry patch with 4 more patches. Patches are completely white. (I also bore-mopped the chamber to get rid of the previous cleaning process) Put the gun together and there is no hint of this gun ever being fired. It's that clean. I think all in it only took one hour.Well-worth getting the whole system I think, although the CU+2 is probably overkill, as Eliminator can remove quite a bit of copper as well. I was most impressed with C4, cause it melts carbon fouling like it's butter. It's great to clean muzzle breaks and DI receivers.

It’s very effective to clean carbon deposits I highly recommend it !

My god this stuff is expensive, but a little DOES go a long way in this case. So far its the only solvent to actually take the carbon off my gas tube of the 5 ive used. With no scrubbing. In fact, I didn't scrub anything and it wiped away hard carbon. [Big Plus: Your household doesn't complain of ANY smell]

Works pretty good on carbon rings