10-18-2011, 08:06 PM
Photos of grendel in PMAG (click for large version)
The first photo shows the narrow stack and how it creates angular forces spreading the mag walls. The grendel mag on the right has a correct double stack, with each case touching 4 others. (Directly above and below, as well as two diagonally)
The second photo shows the positioning of the bullet tips, as well as another view of the gap due to the incorrect narrow stack.
The third shows a dead on view and how the bullet tips are two low. Even if you grind the feed lip (not advised) they will still sit too low. A better option would be to heat & reshape the lip upwards.
Note: even sitting too low like they are they will still feed in the grendels I've tested. This may be due to M4 feedramps, but they work.
Other comments:
- The follower won't address the stack or lip issue.
- The pmags appear to have dremel work on them that I never noticed before. This is one fresh out of a package prior to my testing.
- Yes, I see the dented shoulder on one of the grendel rounds. That was from a jam in a pmag with 15 cartridges loaded.
The first photo shows the narrow stack and how it creates angular forces spreading the mag walls. The grendel mag on the right has a correct double stack, with each case touching 4 others. (Directly above and below, as well as two diagonally)
The second photo shows the positioning of the bullet tips, as well as another view of the gap due to the incorrect narrow stack.
The third shows a dead on view and how the bullet tips are two low. Even if you grind the feed lip (not advised) they will still sit too low. A better option would be to heat & reshape the lip upwards.
Note: even sitting too low like they are they will still feed in the grendels I've tested. This may be due to M4 feedramps, but they work.
Other comments:
- The follower won't address the stack or lip issue.
- The pmags appear to have dremel work on them that I never noticed before. This is one fresh out of a package prior to my testing.
- Yes, I see the dented shoulder on one of the grendel rounds. That was from a jam in a pmag with 15 cartridges loaded.