Well, it was not really a further development from the M1 Garand. Basically the US took a step backwards as "assault" rifles were a much better choice for an infantry weapon. Heavy rifle, very accurate out to a distance but it didn't have the amount of fire due to the 20 round magazine and large amounts of recoil that the M16 had, or even the AKM. I know at first it had a lot of production issues like every single other weapon that was first produced. But... I dunno. It is still in use. Not as an infantryman rifle but as a marksman rifle. It fits that niche pretty well, I mean the US army and Marines both use a variant of it... I don't think VarenykySupreme has ever fired an M1A from Springfield... Like, it's a rifle. You get used to wherever the weight is on any of the weapons, I mean tons of countries use bullpups which are weirdly weighted compared to standard AR15 and AK type rifles. I know they had some problems originally but uh, I don't really see any with the newer models. It's penetrating power is awesome. Calling it less than acceptable with it's accuracy is a poor opinion. Just by it's design it is inherently accurate. The round it fires is very accurate. I've never heard of an inaccurate M14 rifle or any of it's variants. you know, the M110 actually has a lot of accuracy problems. You get some really well made ones, but it takes one of those really well made M110s to beat out an M21 type rifle. I try not to hold the opinion that any weapon is perfect, except for the 1911. That thing is the most perfect hand gun ever created.