James Maccari said some of the old apex small seals were light blue but the newer ones are red, the seal in the picture turned out to be the gamo telsa it is dark blue, it was kind of confusing being my first time at putting the seals in, all I could go on was I knew what size the apex was supposed to be. The telsa was very hard to get on the piston and I may not have gotten it on all the way, as it was hard to cock and after 500 shots the seal pulled off. I now have the apex small (mine was light blue) in my whisper and it is awesome, and it just keeps getting better.
Jeff