A quick look at what was hot in the gun world in 2011...I'm not saying practical, just what was hot...
Tacos....rather magazine tacos. I don't know about using them in a tactical situation where you're in and out of the mud etc...but it works great on the three gun circuit.
Travis Haley. This guy is a rock star in the gun world...He's on his own now and you can bet that when he gets behind a piece of gear that its gonna be a best seller.
Chris Costa. The other rock star in the gun world. No particular order with these two guys...if Chris is rocking a new set of ear muffs then expect the price to triple and for them to sell out regardless.
Aimpoint T-1. This
light sight is so popular for two reasons...first up is the fact that you see many guys running around with AR's that weigh as much as an M-14, and then second you have Costa and Haley running these lights on their weapons.
Kydex holsters. The big boy on the block is the Raven holsters, but everyone is getting into the market. Raven has a turn around time of 4 to 6 months -- another case of the Costa/Haley effect (known from here on as the CHE)...I don't know anyone with a Raven but kydex seems to be kydex...I'll have to see one up close to know the difference.
M&P pistols. XD's were the rage last year, in 2011 it was all about the M&P's. I blame this on Glock. I'm a Glock fan and I can tell ya that gen 4 was a total clusterfuck. That left an opening for everyone else and M&P charged right into the breech.
And the most innovative thing to come out of 2011 was the return to the War Belt concept. Above you see John's setup. He's serving with I believe the 1stMarDiv, and has the CAR to prove it. Forget CHE, I'm following his lead.