I keep thinking to do this and always forget. I'm setting a reminder this time so I actually do it. I always think to myself that if I just do an "oh shit" grab of my rifle, all I have are those 10-11 rds that are already aboard my rifle. This doubles that. Thanks man.
Here’s a hypothetical example; your mileage may vary, but the principle will hold.
How many rounds can you fire in three seconds? Really light up that trigger.
That is how many rounds might be fired at you by just one bad guy during the three seconds it may take you to fumble a mag out of its pouch and shove it up into the well. Why not cut that delay in half on your first reload? (2020 addition: You also reduce the odds of the dreaded “fumble-rooski” with that fresh mag you are trying to extract from its pouch unseen while your eyes remain on target. You are just grabbing the fat base of the double mag that’s already in the well, lowering it a few inches, and shoving it back up two inches over.)
MAG|Couplers simply replace the floorplate of your existing PMAG® magazine allowing for the connection of two like magazines back to back. Great for featureless builds and designed for popular magazines including PMAG® AR/M4 GEN M3™, AR10 PMAG® LR/SR GEN M3™ and PMAG® AK/AKM MOE®
This intrigued me so I tried it. I found with the pencil at 3” it will catch on the dust cover of my rifle. So I moved it to 2 1/2”. Perfect! No matter how I insert the mag it doesn’t catch on the door
I’ll try this out!