Every one I looked at was priced under $299 including a Colt M4 in 22...
It seems like Umarex is coming back like a bad case of incurable V.D. In all seriousness, keep away from it and anything Umarex as if it could give you contact herpes.
That "Colt" M4 isn't made by colt. It's made by Umarex. Umarex = utter garbage. I used to own one. I got bit by the AR-15 bug and started out with the Umarex Colt M4 .22lr so I could practice with affordable ammo. I got suckered by the prancing pony roll mark and the weight of the rifle.
The thing was a heap of poop. The instruction manual said that the bolt never had to come out for cleaning. I was to clean it from muzzle to breach. Here's the upper. Looks convincing right?
To clean, part of the process was to loosen the flash hider. The flash hider came loose. To my surprise, the barrel dislocated. The only thing holding the barrel in place is the tension provided by screwing down the flash hider.
I decided to take apart the upper to try and fix it. These pictures were taken
after I cleaned an amazing amount of .22lr fouling from all the parts. Here are the working guts removed from the pretty shell.
The bolt is enclosed by the upper, with no easy means of removing it for cleaning.
Here's the completely disassembled upper.
The lower is 100% proprietary. The trigger is held in an enclosed unit. It isn't compatible with any AR-15 stocks, grips, anything. It had a nice fake bolt release paddle that was for show. It was a loose piece that would fall out when the rifle was hinged open. The fake dust cover on the upper was another frustration. It was for show, always open.
Pretty on the outside. Garbage on the inside. I remember 5 years ago, the Umarex Colt M4 had earned such a bad rep that one online dealer's description was "not a good rifle, but might make a good tomato vine trellace if staked into the ground". The blow out price back then was $400. They can keep on dropping the price. I won't ever recommend that pile of garbage to anyone.
Colt M422, HK MP5 22, HK 416 22, it's all the same Umarex garbage internals in a pretty cover.