MI will even cut you $15 off a low-pro gas block if you buy one of their handguards. I really like this one:
Midwest Industries: Lightweight M-LOK Series One Piece Free Float Handguard
Hi All - New here. I have a 9 Shield and 9 FS and am currently ratholing money for a 9c. However, the M&P that is best in my hand in the 45c.
I wish S&W would make a 9 "Mid" that matched the 45c in size. You could probably get 14 rounds of 9mm in a gun of that size (maybe even 15) and the 4"...