It is a buttstock shellholder. It has a zippered pouch as well as cartridge loops to hold extra ammunition.
This model is made by Blackhawk Tactical, and is similar to the one I have on my Ruger Mini 14 which is made by the Allen Company. This one is mounted on a Savage Model 10 FP in .308. Bill T.
These are my 5 Bushmasters. All run great! The gun second from the right is the Heavy Barreled M-4 with A-1 sights. It's a very dependable gun, and priced around $725.00, give or take. If you buy one get it from Davidsons, http://www.galleryofguns.com They carry the full Bushmaster line, and any gun you buy from them comes with a Lifetime Free Replacement Warranty for as long as you own it. You can buy it on line and they will ship it to your local dealer. They have most all of them in stock, and it only takes 3 days or less to get it. Bushmaster builds a nice, accurate rifle. Bill T.
Bill T,
Those AR's are the nicest battery I've ever seen. Gee wiz I wish I lived in Arizona!!!?? :-( I live next door in California where the sun nazi's make stupid laws and run the shooting ranges outta town. All I can get are those UGLY California AR-15!!
http://www.youtube.com/watch?v=7B9NkQldeu0 check out this video, shooting a dpms .223 at 860 yards at about a 18 inch plate, you can hear the hits since they have a camera off to the side