12g Co2 Cartridges Adapter Instead of 88g or 90g Co2 Capsule, Co2 Quick Change Holder Compatible with Sig Sauer MCX or MPX

This thing is awesome. I got it for my Sig MPX pellet rifle because finding 88g/90g co2 containers was a hassle, and pretty spendy at $20-$30 for a 2-pack depending on what you use. It works perfectly for the small co2 containers and will pump out about two 40 round mags before needing to change the co2, which is perfect for a little plinking session or target practice as apposed to the 90g co2 which is good if you plan on shooting for hours but not very practical for quick fun. It cuts the cost of using my pellet rifle by quite a bit, and I don't have to worry about wasting half my large co2 before I store the rifle for a while if I don't use the whole thing. I would definitely recommend this.

Does exactly what it’s supposed to do. No issues with the o-rings (other reviewers complained). The key is to put a drop of pelgun oil on the top of each co2 canister before inserting it. No issues with leaks during attachment either. I get about 40-50 shots per 12g cartridge. Going through 1-2 cartridges per session is about right. I don’t think I could go through a 90g canister and I certainly don’t want to waste co2 not leave it in the gun for a long time and compromise the seal. Great product!

This is a soundly made, metal adapter. It even doesn't leak when piercing the cylinder. However, in its first use, the small "piercer" jammed with the circular piece of metal which it had cut out of the cartridge cap. It took a bit to find thin and rigid enough wire to remove the jammed cone and force out the plug. That problem hasn't recurred, over about 10 more cylinders. The biggest problem is the supplied O-rings (and it came with three, fortunately) absorb something from or react to air and/or CO2; after a single use they pop out of their ring around the piercer and cannot be replaced because they have expanded. In fact, they then are so large they can fit AROUND THE NECK of the CO2 cylinder. They are easily replaced (I bought some in bulk), however, and now the adapter is functioning well. We will see if the replacement O-rings also swell ... my prediction is, no.

perfect for shooting a few arrows

Worked perfect on my Sig Sauer MCX. Not sure why any of the reviews say it doesn't fit in the stock... it's half the size of the recommended 90G CO2 cylinders and the adapter threads in beautifly. I get 45 rounds per 12G cartridge (clip and a half) even though it says it should only do 20. After my wife and 3 kids, purchasing this was one of the best things I've ever done. P.S. I don't work there and am in no way affiliated... just a great product IMO

It worked good untell the pearcing point became dull

Worked well. Read complaints about the o rings swelling. They do indeed do that but I haven't had any issues stuffing them back in and getting them to seal again. Hit your local parts store and you should be able to find AC system seals that will work just as well if not better.

This I’d definitely buy over and over again. It’s the best way to save money on 90 gram Co2 cartridges. You get about a mag and a half out of a 12 gram cartridge in a Sig MPX/MCX. Definitely worth the money.