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+--- Thread: Magazines, whats the difference (/showthread.php?tid=23533)
Magazines, whats the difference - Stovestoker - 07-12-2021
Can anyone break down the real difference in a Grendel mag V a milspec 5.56 mag?
Magazines, whats the difference - Old Bob - 07-12-2021
As far as as I can tell, the biggest difference is the follower. The .223/5.55mm follower has a shallower rib than the Grendel follower. Another difference could be the first internal ribs in the mag body that guide the bullets into the mag. The space between the right & left ribs appears to be a bit wider in the Grendel mag than the .223 mag. The larger diameter bullets in the Grendel cartridges would surely necessitate this.
I measured some of my mags: An aluminum, 20 round G.I. 5.56mm mag was .570" between the ribs. A commercial, stainless steel 30 round .223 mag was .600" between the ribs. Two of my stainless steel Grendel mags were .640" (10 rounder) & .644" (25 rounder).
Magazines, whats the difference - Rosecrans1 - 07-12-2021
Hi SS,
In a nutshell, the follower is just one difference. I tried changing out just the follower. WRONG! Spring tension, follower, width, receiver fit, etc.
Magazines, whats the difference - lazyengineer - 07-13-2021
Bigger diameter round. As it turns out, that's OK, because the ribs inside a 5.56 mag make a standard AR mag bigger in width than it really has to be - which I hadn't really considered before. So make the ribs a little more shallow, and now the mag is still big enough to allow the bigger diameter Grendel round to still fit and to stack smoothly. But with that, need a bigger follower, and need different angle magazine lips.
you CAN make Grendel work stuffing a few rounds into a standard 5.56 mag, but only a few, and don't bank on it.
Magazines, whats the difference - TomSawyerNW - 07-13-2021
lazyengineer Wrote:Bigger diameter round. As it turns out, that's OK, because the ribs inside a 5.56 mag make a standard AR mag bigger in width than it really has to be - which I hadn't really considered before. So make the ribs a little more shallow, and now the mag is still big enough to allow the bigger diameter Grendel round to still fit and to stack smoothly. But with that, need a bigger follower, and need different angle magazine lips.
you CAN make Grendel work stuffing a few rounds into a standard 5.56 mag, but only a few, and don't bank on it.
Agree. I experienced feeding problems with a 5.56 mag in a Grendel. In a couple of my Grendels, this doesn't appear to be an issue, however. But I make a point to match 6.5 mag with Grendel.
Magazines, whats the difference - Dt219 - 07-15-2021
I have 2 grendels. And several Grendel mags and several 6.8 spc mags. Both guns runs them no problem. If you cant find grendel mags