Bore Tech Cu+2 Copper, 16 oz

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.

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.

Absolutely an amazing product!Every now and then I seen a guy at the range attempting to re-sight in his 30-06 Ruger Hawkeye complaining the barrel must be blown out, constantly bitching & complaining over several times to the range that the damn gun is done. So this last time while he was in deep frustration to shut him up I offered to buy the damn gun so I could concentrate on my own rounds, he said ok what do you want to pay... I said a $100.00 and threw a benjamin down, he said I'm done with this fricken gun it's yours.After I finished for the day I took the Hawkeye home and took out my bore scope and literally could not see any rifling because of the amount of carbon & copper buildup... CRAZY! So I recently bought this CU+2 to attempt to clean this gun with the hope's the barrel wasn't pitted out.I used a rubber chamber plug, stood the gun up and filled the barrel with this CU+2 for 24hrs. After draining the barrel then using a plastic brush through the barrel many many times, then about 25 dry patches later I finally got to a very light blue patch color. Repeated the Camber plug and filled the barrel for another 12hrs, then more runs with the plastic brush, then another 25 or so patches and low and behold the Hawkeye's rifling looked brand new and to my surprise had no pitting. This CU+2 product is an amazing product that was thrown at an extreme case of neglect and proved itself to be a very respectable product to have on any weapons owners shelf for future good buys from the range...lolAfter the cleaning and 10 rounds through it, it's now one of my favorite shooters, nice & light and fairly accurate for a production gun... 1.5-2" groupings at 250yrs with home loads. I've now added another reason for my range trips, potential good buys!

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.

No foul for and cut copper fouling!

To get copper fouling off of my rifle barrel. It does such a good job, I had to shoot a few rounds to get my rifle bore a little dirty to soot properly again.

Seems to work good

Used Butch’s Bore Scrub on my barrels for years. Could not get the residual copper out of the lands. The Bore Tech really did the trick. Removed copper easily with no toxic smell.