12-31-2011, 07:20 PM
independentrider1 Wrote:has anyone ever held a 5.56 mag next to a grendel mag for comparison? Are the physical dimensions different or are just the internals. I am currently working on building mine so I haven't purchased and Grendel mags yet. if the dimensions are the same maybe the follower can be switched out.
The grooves are shallower on the Grendel mags, so the followers may not swap between mag bodies. Also, aluminum 5.56 mags will just swell up as you add more Grendel rounds, becoming unusable after 5-6 rounds have been inserted - no matter what follower you have in there.

