You’re looking at almost 10 inches of ammo — 41+1 in all!
You won’t get the full +12 effect on a 31-rounder with our extension (too much spring to deal with), but you’ll certainly turn heads at the range! The shooter that wanted this plans to shoot the MGM Ironman with a 9mm carbine and two of these massive 41-round mags. As far as brute firepower goes in a Glock, it just doesn’t get much bigger than this!
UPDATE: We just received a small batch of ultra-long springs that will be perfect for shooters wanting to try this. Lone Wolf and Kel-Tec 9mm carbine owners in particular see a lot of value in a mag this length. Look for video in the next week or so.