BCM Low Profile Gas Block for AR15, M16, M4, M4A1.

BCM Low Profile Gas Block for AR15, M16, M4, M4A1.

Daniel Defense Low Profile Gas Block for AR15, M16, M4, M4A1,  for .750 barrels.

JP Adjustable Gas Block - Low Profile - Black for AR15, M16, M4, M4A1.

JP Adjustable Gas Block - Front Sight Base for AR15, M16, M4, M4A1.

Low profile gas block for barrels that are .625"

To replace your exsisting standard fixed front sight on your AR15, M16, M4.    Made by Midwest Industries.

This .750 diameter barrel mounted gas block has a 2 1/2" top rail that has the same plane as the Armalite 308 receiver.

PRI Gas Block for AR15, M16, M4, M4A1,  for .750 barrels.
Same plane as flat top upper receiver !!

VLTOR Low Profile Gas Block for AR15, M16, M4, M4A1.

VLTOR Low Profile Gas Block for AR15, M16, M4, M4A1. (Stainless Steel)