The 325 NG is as close as it will get, and based on scarcity and used market prices the Gov is a very suitable, and economically feasible, stand in. The Gov's overall dimensions aren't much bigger than the NG, and it does have multi-caliber capabilities. S&W had a good idea with the NGs, but the price point was too high for the masses, and the purists among us weren't keen on the tall sites. With the right holster, the Gov makes for a rather practical .45ACP carry gun, and is the best we can hope for at present.