Hi All:
Newbie when it comes to AR15’s (though not guns).
Just got an M&P 15 Optics Ready & want to upgrade from stock
carbine length handguard to a Mid Length Magpul hand guard
(MAG426).
I know the mid length is about 2 or 2.5 inches longer.
If I make this change, do I need to remove & reposition
the gas block and install a longer gas tube? OR does the
Mid length just drop in?