For a 20 inch govt profile a metal two piece quadrail is better. Why? The 20" is very skinny and would whip alot without the reinforcement of a 2 piece qualrail. I personally tested a A2 against a A4. I believe for the money a utg is hard to beat, it locks up by 6 screws, and it is very solid. If you have over 100 get a nice YHM or something. A MOE rifle length with accessories would be lite but not sturdy and solid.
well i emailed the guy asking him where he got it from and asked for some details. i dont really wanna get this barrel and then find out its bad you know
the guy said he put 50 rounds down it and had good groups at 100 yards. i could always just shoot it when it gets hear and find out for myself. if its not accurate i can just send it back
W its a LONG skinny barrel and I think it would flex alot free floated.