I have been thinking about upgrading my newest AR, a CMMG M4 LE, with a Magpul CTR stock. For those of you who have one is the thing worth $100 as a upgrade over the M4 stock? Also I am looking for a new rail hand guard. I am looking at Midwest Industries and Troy two piece drop ins, out of the two which is the better? Thanks. Wanna kill these ads? We can help!