Yeah Tex, I saw some of the damage done to 1/4 steel plate, cars on"Future Weapons", and ballistics gel. I was wondering if any other companies are making Beowulf ammo? AlexArms may still have the patent rights for a couple more years. I, also, saw that a .223 mag needs a feedlip mod to be able to release the shell. I know the follower needs to be changed for a single stack feed. I would buy Beowulf mags, but just in case it is needed, its nice to know because of the availability of the AR clips. When I order the Beowulf upper, I am definitely going to get the muzzle compensator. AlexArms says that it reduces recoil by almost 40%. That may be a little bit of "salespitch", but I feel with that kind of power anything will help. If it doesn't work, I'm hanging a dumbell from the barrel.