First, you may get more responses, if it were posted in the..."pistol" section of the forum !
Second, are you looking for a pellet gun, or a BB 1911 Government ?
BB guns aren't very accurate by nature. Pellet guns are MUCH more accurate, and to a longer distance.
I was also, recently in the hint for a well done 1911 Government copy. I looked at every one sold today, reviewed both in writing, and on YouTube. Not happy with the BB style, as I have a couple of higher end BB guns. While they can...be MADE sort of accurate, it takes a bit of work in modifying things.
I looked at the Umarex, pellet shooting version. While the double bladed trigger is a little odd, overall, the gun is very nice. No, there is no "blowback" of the slide...sorry. The pellet magazine is a round, made of aluminum item, as many Umarex guns have. The gun is also set up as a single AND double action trigger, hence the double bladed trigger. For single action shooting, you must pull the hammer back s I mentioned, the slide does not move. The trigger takes a little getting used to, but in the single action mode, it's not that bad.
Overall, this 1911 Government version is worth the extra money. Even the factory grips are nice. Not gonna change them.
Note, that's a cat hair on the slide release, not a big scratch ! I should retake the photo.
Mike