More to explore:
60 and 100 round magazines
$129 SureFire High-Capacity M4 / M16 Magazine, 60-Round
100-round magazine compatible with m4/m16/ar-15 and variants (STANAG 4179). the mag5-100 means more zombies you can take out before needing a clip change.
$90.30 SureFire 60-Round High Capacity Magazine
Read this post for the latest on the 60-round and 100-round SureFire High Capacity Magazines
SureFire MAG5-60 60 Round 5.56mm Magazine.
SureFire MAG5-100 100-round magazine for M4/M16/AR-15 variants. That's a lot of 5.56!
.223 AR-15 60 round mag. Still not enough...
#Ruger 10/22 Magazine Pouch also fits those long #Glock 33 round magazines
Mega Arms MATEN (.308) with a finish similar to NP3. The magazine and furniture are Magpul, the light is from SureFire X400, and the can is from AAC. The goggles are from Rudy Project and the shooter is from Praetor Defense. By Stickman.
M4/AR-15 Survival Buttstock with built-in extra 10 round magazine. Fits my DPMS AR-15.
A true lifesaving product, awarded invention of the year by time magazine.
Article titled "Personal Kit" by Pat Rogers in the October 2011 issue of SWAT magazine by Jones Tactical, via Flickr