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The magazine makers are labeled A-L.
Alpha is 8.45 oz. Bravo is 3.86 oz. Charlie is 5.41 oz. Delta is 8.92 oz. Echo is 4.45 oz. Foxtrot is 4.97 oz. Golf is 4.34 oz. Hotel is 3.94 oz. India is 4.98 oz. Juliet is 4.32 oz. Kilo is 4.30 oz. Lima is 4.23 oz.
Tested in M4A1, M16A4 and M27 weapons.
Alpha is heavier than the others, prolly a steel magazine.
Delta is heavier than the others and works well in the M27, making me think that it's the H&K High Reliability Magazine.
Foxtrot is a Magpul windowed PMAG M3. We know that because Magpul pointed it out.
Golf is rumored to be a Lancer L5.
India is rumored to be a USGI Enhanced Performance Magazine (EPM). Debunked!
Juliet might be the Enhance Performance Magazine.
Kilo might be the legacy tan-follower USGI magazine.
No rumors as to what Alpha, Bravo, Charlie, Echo, Hotel, India and Lima are.
Class I failures can be corrected by the user within 10 seconds with tools on hand. Class III failures require an armorer.
M4A1 results:
Alpha: 4 failures. 3 weapon, 1 system.
Class I: 1 system.
Class III: weapon 1 FRA.
Bravo: 10 failures. 8 magazine, 2 weapon.
Class I magazine: 8 bolt over base M4A1.
Class III: weapon 1 FRA.
Charlie: 10 failures. 5 magazine, 5 weapon.
Class I magazine 3 double feed, 1 bolt over base, 1 OTH; weapon 3 bolt over base.
Class III: weapon 1 FRA.
Delta: 2 failures. 2 weapon.
Class I weapon 1 bolt over base.
Echo: 2 failures. 2 weapon.
Class I no failures.
Class III: weapon 1 FRA.
Foxtrot: 2 failures. 2 weapon.
Class I no failures.
Class III: weapon 1 FRA.
Golf: 29 failures. 1 ammunition, 28 magazine.
Class I 1 ammunition, magazine 22 failure to lock to the rear, 1 BLE.
Class III magazine 2 OTH.
Hotel: 5 failures. 1 magazine, 4 weapon.
Class I magazine 1 bolt over base.
Class III: weapon 1 FRA.
India: 19 failures. 16 magazine, 3 weapon.
Class I magazine 16 failure to lock to the rear.
Class III: weapon 1 FRA, 1 OTH.
Juliet: 2 failures. 2 weapon.
Class I no failures.
Class III: weapon 1 FRA.
Kilo: 2 failures. 2 weapon.
Class I no failures.
Class III: weapon 1 FRA.
Lima: 4 failures. 4 weapon.
Class I weapon 2 failure to eject, 1 failure to extract.
M16A4 results:
Alpha: No failures.
Bravo: 2 failures. 2 weapon.
Class I: weapon 2 bolt over base.
Charlie: No failures.
Delta: No failures.
Echo: No failures.
Foxtrot: No failures.
Golf: 3 failures. 1 magazine, 2 weapon.
Class I: magazine 1 failure to lock to the rear; weapon 1 bolt over base.
Hotel: 1 failure. 1 magazine.
Class I: magazine 1 double feed.
India: 1 failure. 1 magazine.
Class I: magazine 1 failure to lock to the rear.
Juliet: No failures.
Kilo: No failures.
Lima: 1 failures. 1 weapon.
Class I: weapon 1 BLE.
M27 results:
Alpha: 5 failures. 1 magazine, 4 weapon.
Class I: magazine 1 bolt over base; weapon 2 bolt over base.
Class III: weapon 1 FRA.
Bravo: 79 failures. 36 magazine, 30 weapon, 13 system.
Class I: magazine 1 double feed, 25 bolt over base, 1 stuck round; weapon 29 bolt over base, 1 BLE; system 12 bolt over base, 1 BLE.
Class III: magazine 2 OTH.
Charlie: 51 failures. 19 magazine, 32 weapon.
Class I: magazine 3 double feed, 13 bolt over base, 1 FSR; weapon 29 bolt over base.
Class III: magazine 1 OTH; weapon 1 FRA
Delta: 1 failure. 1 weapon.
Class I: weapon 1 bolt over base.
Echo: 1 failure. 1 weapon.
Class I: 1 bolt over base.
Foxtrot: 4 failures. 1 ammunition, 3 weapon.
Class I: ammunition 1 failure to fire; weapon BLE.
Class III: weapon 1 FRA.
Golf: Did not fit in magazine well.
Hotel: 1 failure. 1 weapon.
Class I: 1 bolt over base.
India: Did not fit in magazine well.
Juliet: 15 failures. 3 ammunition, 4 magazine, 7 weapon, 1 system.
Class I: ammunition 3 failure to fire, magazine 3 bolt over base, 1 stuck round; weapon 7 bolt over base; system 1 failed to chamber BLE.
Kilo: 6 failures. 6 weapon.
Class I: weapon 3 bolt over base, 2 fail to fire, 1 stuck round, light strike.
Lima: 17 failures. 1 ammunition, 8 magazine, 8 weapon.
Class I: ammunition 1 failure to fire; magazine 4 bolt over base; weapon 8 bolt over base.
Class III: magazine 1 OTH.
Considering the number of weapon failures with the M27 compared to the M4A1 and M16A4, I think we can put to bed the whole "pistons are better than direct impingement" argument.
"System" stoppages don't have an identifiable source. BLE is associated with the bolt breaking and/or the nose of the round getting stuck on the feed ramp, OTH seems to be a generic "other" cause. FRA is some kind of feed ramp failure.
The most common failure, overall, was failure to feed because of bolt over base.
Golf's most common failure mode was to fail to lock to the rear.
Again, if anyone has a list of who was what vendor, or even which 11 vendors were tested, drop a comment!
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