only know what it says.. 5.56 can $175 on closeout. i dunno. thought it seemed worth mentioning...hope i did the link right. nope.. i'll try again. http://Griffin Armament
The guy who started/runs Griffin Armament is a member on ARF and has been for some time. He started Griffin Armament/ HPLLC a couple years ago with his flagship .22 can, the Checkmate. He posts as Green-O on ARF and his .22 can is pretty cool, it was one of the first monolithic core cans. I don't know much about his 5.56 can but for the price, and a 26 db reductions, it would probably be a safe buy YMMV Etc