CM.045C - has the RIS fitted as standard, unlike the ICS AKS-74U.
There is a particular procedure you have to follow just right to ask them to downgrade the FPS for you, which they will do for the cost of a new spring, so you should email them beforehand to ask. Seriously, do not imagine that you can just email them after the order is placed and say "oops i forgot, can you please..." because it'll be a no can do - possibly something to do with the way instructions are relayed from their English speakers to the Polish tech/s who actually do the job, but whatever, at least one of our members has made the mistake of failing to follow their instructions to the letter and had to get a spring change done by someone else once the gun arrived, which incidentally voids the warranty.
I was totally in love with my ICS one, until she started misfeeding for no apparent reason, but tbf i had messed about with her quite a lot before that happened so it is totally my fault, not ICS's. That said, as stock the IKS-74U, to give it its proper stock number, out of the box is pretty much dedicated to CQB in that its FPS is very consistently around 318-20 on 0.2g BB's, which is fine for what you're looking for, but if you want whatever you buy for CQB to also be backup for woodland the range will not equal that of decently set up guns firing at 345-ish. It's not entirely simple to get the FPS up either, since 1) it's a ballache to get the gearbox out (you need a right angle posi screwdriver) and 2) the spring is permanently attached to the piston head+piston in a fixed assembly and, even though there doesn't seem to be any difference between ICS gearbox parts and other manufacturers', nonetheless mine kept jamming until i stumped up for an ICS aluminium piston. I can't say for sure how true that is across the board, but for certain they are not compatible with external parts/body kits made by other manufacturers. And 3) fitting a 6.03mm TBB on such a short gun only bumps the FPS up to about 337-42, which is still below ideal as a woodland backup, but a 6.01mm (which most people would say is too tight for an assault rifle anyway, but if you're using it almost exclusively on semi then you could afford to buy Blaster Devils) will take you well over 350 and unfortunately a 6.02mm does not turn out to be Baby Bear's TBB as it still produces over 350 from the stock spring.
The CYMA i linked at the top is the VFC clone type, as opposed to the TM clone, however, so it'll be really nice externally and compared to the quality of the ICS, I expect that the only noticeable difference would be the durability of the paint - and let's have it right, an AK should look battered to fuck...