Bore Tech Cu+2 Copper, 16 oz

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.

I recently bought a borescope and realized all these years I’ve been cleaning my firearms… I haven’t actually been cleaning my firearms! The carbon fouling isn’t tough to clean, but the copper fouling I found in my barrels shocked me! I went through an entire bottle of Hoppe’s copper solvent over the past two weeks (stinky stuff!), and it didn’t get the job done. This CU+2 stuff just arrived yesterday, so I ran some wet patches down the barrels as suggested, but I decided to let it sit overnight. I just ran a dry patch down each barrels this morning, and the amount of blue (dissolved copper) was impressive! I think maybe two more rounds of this, and I should be good. This is third product I have tried now, and it is doing what the other two failed to do.

As a cleaner this product does an excellent job with no odor. I usually use Gunzilla (which I like a lot but does have a slight odor) and this cleans better. However, it is not a CLP like Gunzilla. I will continue to clean my barrels with Bore Tech but use Gunzilla on any parts that need lubrication like the bolt. I went to the range today and shot 15 rounds of .308. The attached photo is the first dry patch after about a 10 minute wait after applying Bore Tech with a wet patch only. I did not use any brushes to get this result. Hopefully you can see some blue from copper fouling which I never got from Gunzilla.Update: I bought 2 ounces of Copperzilla to compare (that’s the largest bottle I saw). They work about the same both cleaning copper very well and neither smells. However, Bore Tech is about $1.62/Ounce while Copperzilla is $7.50/ounce. That makes it a no brainer for me, I’ll use Bore Tech.