I have had several air rifles, I like the Crosman 1077 CO2 the best for general all round plinking. CO2 has some disadvantages but in my mind they are overcome by convenience. The CO2 cartridges are not too expensive when purchased in the larger count boxes, but for sure, they add to the cost of using the rifle. The pellet magazine is a 12 shot rotary design and you can purchase additional magazines. The 1077 has been reliable and is very accurate for the first 20 ~ 25 shots from a newly inserted CO2 cartridge. I use the iron sights but the rifle is rail grooved for a scope. At a little under 4 pounds most anyone can hold it, the fore stock and butt are of average length, a 10 to 12 year old will very likely be able to properly sight it. The .177 caliber pellet can be purchased in several head shapes and weights making the rifle usable for target shooting to small varmint hunting. Anyway, I have liked this rifle for about tens years and intend to keep it.