Things I liked:A must-have if you only have one mag and rotary clip.
Things I would have changed:Nothing
What others should know:For some reason, this one gets jammed more often than the one that came with the gun.
Things I liked:This is an absolute must-have if you own a 1077--especially if you have the accessory kit that allows you to use the bigger CO2 cartridges. The magazine and clips function perfectly with Crosman Premier hollow point pellets. About one pellet in 500 will be too small and will fall right back after loading in the clip--not a big problem, and the fault is with the pellets not the clips.
Things I would have changed:Absolutely nothing for the price!
What others should know:I have 16 of the disks for 192 shots before having to reload (which takes me about half an hour while watching TV. That's enough to shoot out about half of one of the 88 gm AirSource CO2 tanks, then shut the valve, shoot out the CO2 remaining in the gun and put it away for a second go later. Perfect for me!