This is a nice shooting little gun! Feels great in your hands,but the claim of up to 750 FPS for pellets and up to 800 FPS for BBs is way way off.10 shot av. for BBs was 655 at 10 pumps and for pellets was 628FPS at 10 pump shooting 7.5 gr. pellets. I think Crosman needs to place REAL world FPS on their products!!
Would I recommend this gun to a friend YES but I would tell him the truth about the FPS!

I just ordered my MK-177, and put it together this evening. At first look, I'd say the rifle feels a bit cheap with a plastic like body. I have a similar rifle in airsoft caliber and it feels much more realistic. These days many such rifles, (at least the real bullet throwing type), are made out of a polymer which is similar to plastic, but has a more rigid and stronger feel. This rifle feels a little more like plastic and it pretty light weight. My airsoft rifle is much heavier. The sights on this rifle are a bit tall, I think they should make them more low profile. The sights also have more of a cheap plastic feel to them. Loading both pellets and BBs is relatively easy, and pumping the rifle is a little awkward at first, but I got the hang of it very quickly. The power this rifle puts out is pretty amazing, and reading about the other variable pump rifles on Crosman's website, it seems this one is about the most powerful of them all. Something I am curious about is in regards to the overall design of the rifle. On the website, the picture you see of the rifle is a little different than what I received. The small section you see on the butt end of the stock is not present on mine. The picture on the website looks as if you could remove the section to shorten the stock, or add it back on to lengthen it. As I just mentioned, mine doesn't have that piece. However, I can still store BBs and pellet mags in the butt-stock along with the sight adjustment tool, but removing the pad on the stock is rather tough. I wish that the rifle had an adjustable stock like the real weapon, or at least like my airsoft rifle has. I can adjust the length of the stock and raise or lower the cheek pad, not on this rifle though. Maybe that would just raise the price too high though for something like this!?!
All things considered, it is a cool looking, and powerful rifle. I guess I'm just a little disappointed by comparing it to my airsoft version, which has the weight and feel of the real thing. I'd say this is definitely a nice pellet/BB gun, but the price just seems a little on the high side.