No, it will most likely not work as this loader uses the bottom of the case to load the rounds and most .30 cal AR based rounds are larger than .223/5.56.
As per the manufacturer: M-16 / AR-15 10-round universal StripLULA loader for all 5.56 / .223 metal & polymer stripper-clips and magazines, including PMAG’s and Lancer.
No. The Maglula StripLULA Magazine Speed Loader is designed specifically for 5.56 in AR15 style magazines. It will load loose rounds or with a stripper clip. Due to the rim diameter of the 5.56 of 0.378" compared to 6.5 Grendel which has a rim diameter of 0.438" which is too big for this loader.
The Maglula StripLULA Magazine Speed Loader is sold without stripper clips included. You do not need to use stripper clips as this loader will load (10) loose rounds of 5.56.
Yes, this should be compatible.
Yes, that will be compatible with those magazines.
Though they look similar, the dimensions are slightly different. Due to this, they are not able to be used on both types of magazines.
Based on user reviews; You'll be able to fully load a 30 round magazine in seconds.
A user stated "If you have never used one of these, prepare to be amazed! You'll be able to fully load a 30 round magazine in seconds. A sight to behold for sure. Simply attach to magazine slip on the stripper clip, flip the lever and push the rounds in all at once."
Maglula does not specify any information or instruction regarding loading a 30 round magazine.
It fits all M-16 / AR-15 5.56mm type metal and polymer mags.
Yes, it should.