This is my first electronic marker. It was a toss-up between the Invert Mini and this. I chose this over the Mini because it is far more durable over the Mini. Plus if you are anal like me on the condition of my markers, I would have heartburn if the nice finish on a Mini gets all scratched up. If the black plastic gets all dirty and scratched up like my A-5, it just adds character.
I got mine off of eBay. A lady won it at a raffle and had no use for it. When I first got it I noticed how light it was. Around 2.5 lbs without hopper and tank, this was just as light as the Mini but with a collapable stock. The shape is dead on with an MP-7. This gun get my vote for most accurate looking Milsim marker.
Programing was easy. I set my gun to 15 bps with 3 round bursts since I think 20bps and 6 round burst default settings were a bit excessive in a scenario game. The instructions are pretty thorough.
I put about 2500 round though the gun the first time though. I used Heat balls. Which is mid range. I only had two breaks post chamber towards the end of the barrel. No breaks in the chamber. After a day of playing the batteries were drained about halfway and I see another 1500 rounds going through the gun before The battery is done. As for air, my 45ci tank will empty in about 600 shots (4 games worth).
I did notice three very annoying design flaws however. First, the plastic stock and body tends to flex if you mount a tank on the gun but miliarty grade plastic is durable can can take punishment. I just stuck a remote on the gun. Although I lost the manuverbility of the tank being on the gun, the whole thing weighs about 4 lbs with just a loaded hopper.
Second, the stock is a great design for the real MP7 but it does little good for paintball. Like all inline stocks, the mask gets in the way. I would much prefer the butt plate to be where the tank is.
Lastly, the fire setting switch is horrible. It is too easy wo go from one setting to another. There were several firefights that I got into that resulted in my hand pushed the fire setting to safe.
Overall the TM-7 is a great Milsim marker. It's lightweight, durable and is great for out of the box play. Hopefully BT will come out with a fix for the flaws I have listed in the future.
I agree that mask clearance with stocks is always an issue. If I remember correctly, the TM-7 is suppose to come with an end-cap so you can take the stock off...that would be a good option for running it with that tank on.