03-13-2012, 07:21 PM
Welcome. These guys are steering you right. Most carbine buffers for the 5.56 AR15 are 2.9 oz., which I personally feel is too light for the Grendel, but could be made to run ok over the long haul with an adjustable gas block.
+1 on using an M16 carrier
+1 on using a heavier buffer, such as an H3
Let us know what barrel length you're looking at, and what you intend to use your Grendel upper for....
Recreational Target Shooting?
Hunting?
Competitions?
+1 on using an M16 carrier
+1 on using a heavier buffer, such as an H3
Let us know what barrel length you're looking at, and what you intend to use your Grendel upper for....
Recreational Target Shooting?
Hunting?
Competitions?