Just like the title says, I can get either a 16" or a 20" for 20% off what they typically go for and am wondering if it's a good move or not. A friend of mine has a 16" and his has always been good to him but lately I've heard of people having problems. I'd be selling my M1A to do it, it shoots well I just want better than the typical 1.5-2MOA groups and I'd like a free floating handguard too.