User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-68.33.210.237-20110325214505/@comment-1582746-20110326034403

And one has a bigger caliber. The L variant has a 5.56x45 similarly used by the M16 and co. while the H variant has a 7.62x51 which the FAL and M14 use.