>>64139370
They inhoused them way back when. Like 2014 or something crazy.
>>64139389
https://www.brownells.com/gun-parts/magazines/rifle-magazines-parts/ar-15-magazines-aluminum/
>>64139397
>Gen 2
Over inserting
>Gen 3
Hold open issues
>Both
Swelling
Heavier
Physically larger
>>64139413
Would you rather use your own pmag or the rattle trap GI mag that 20 dudes have stepped on?
>>64139426
DD m4a1 not a terrible idea assuming you nuke the furniture.