Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login
Posted: 12/28/2005 5:47:23 AM EDT
I have a A2 upper only marked with a keyhole, the barrel has no markings. How would I find out if it's 223 or 5.56mm?

Link Posted: 12/28/2005 7:44:47 AM EDT
Key hole is for Cerro Forge, currently used by all the various manufacturer's. Where did you get the upper from?
Link Posted: 12/28/2005 1:54:15 PM EDT
contact whoever you bought it from
Top Top