It's a shorter version of the AimX, but with open sights. Should be a little better balanced/easier to handle than the AimX though.
The Brocoock rep' brought a .22" version into my local shop a couple of months ago, but they didn't have it off him as they sell 10 .177"'s of anything to 1 .22". Thet were waiting on .177" barrels, but as the Contender rifle has just turned up in .177", hopefully, the Atomic's will be around shortly.
Chris.