Things I liked: On the Co2 adapter I received, the machine work is perfect, as is the finish, threads were perfect and it fit the spin lock threads of my Talon SS, as well as both of my 12oz Co2 bottles perfectly with no leaks or problems with the threads. It allows a lot of very quiet indoor wintertime shooting for 3.50$ per fill(local paintball shop price).
Things I would have changed: offset the inlet/outlet, and offer a butt stock that is exactly like the one my talon came with except larger diameter clamping band to fit the 12oz Co2 bottle diameter.
What others should know: Use the 12oz Co2 bottles, they are only slightly larger dia than the HPA tank your Airforce rifle comes with. the larger one offers more shots but is not very comfortable to shoot. I have no comfort problem with the stock tank or 12oz Co2 tank but I do with the 20oz tank. Shot count and velocity WILL vary with temp. I recommend running on low power settings,for way more shots and in my rifle its only like 20fps difference between settings 2 and 12 when its around 50-60 degrees inside my shop. I get 1 hole 10 shot groups at 20 yds with boring regularity in my shop and Also I have dispatched ALOT of Starlings with Crossman Premier HP pellets in my .22 cal Talon SS with the Co2 tank attatched on power level 4. It has plenty of power and is very quiet which is a huge bonus as Starlings get wise really quick.
Things I liked: You now have unlimited, anytime,anywhere HPA refills. never need worry about an empty or low fill tank or the scuba shop being closed.
Things I would have changed: a little longer hose would be good but with my Talon SS I just rotate the spinlock tank so the gauge points up at 45 deg which makes it easier to see it and the foster valve is pointing at a 45 degree angle downward and the hose just makes a gentle curve up to connect. this works well if you use a LOW Harris bipod or similar, it is problem solved to connect and fill the tank on the gun.
What others should know: Takes a bit of effort but not bad, I was pleasantly suprised how easy it was after you get used to pumping the correct way with body weight doing the majority of the work