Home Forums Hunting & Shooting AR and Tactical Rifles Which AR15 mag for max coal?

I built a 6x45 AR and I'd like to use the brand of 10 round mag that will give the longest coal. What say you?
Thanks!

AR Stoner mags have been reported to be the one but I haven't seen one to verify. Of course someone (dpms?) used to make a VLD mag but they are rare.

HK mags if I remember right were a bit longer than pmags or GI mags. I think PRI makes some also. Both are not cheap.

I wonder if a 6.8 mag would work?

I don't understand the desire to long load anything in an AR. To quote a famous politician, even if you gain 0.1", what difference would it make?

Since it is a 6x45 the bullets are longer and have to be seated really deep, right up to the start of the ogive. I'm just trying to gain back a little case capacity and ability to use monometals which are longer than cup and core.

Case capacity, MV, possible accuracy depending on chamber reamer chosen.....

I have a mag that came with a KAC rifle (Stoner) & it's the same as the metal mags from Brownells, same length, & appears to be from the same mfg.

2.260-2.265 max. loaded length.

MM

I know the lancer mags are shorter than p mags

I convert the front of 10 and 20 round Magpul Gen3 PMAG's. The converted 20 round mags hold 15 rounds and the converted 10's hold the full 10. They are structurally sound and function well without issue.

The 6x45 cartridges pictured in the magazines bellow are 3.345.