I just got a used 226 from Gunnar at Armco and it's got a marking I can't identify. It's a crowned shield with a lion on it's hind legs on either side. Anyone know what the stamp means? I'm guessing it's a property mark of some sort.
European firearms manufacturing tends to be more heavily regulated than the U.S. industry: governments often set standards on the amount of pressure gun barrels are required to withstand before bursting. Special extra-hot "proof loads" are fired through all guns to indicate their ability to withstand regular pressure loads over long periods of time. This is often done in government-operated "proof houses". When a firearm has been so tested, the proof house marks it by stamping one or more symbols onto the gun. On most SIG-Sauers, the symbols are placed on the underside of steel slide just forward of the front of the frame, or near the P230's ejection port.
German manufactured SIG-Sauers typically come with three proof marks. The first is an ornamental crown with an N beneath it to indicate it was proofed with smokeless (nitrocellulose) powder. The second looks like a "squished 8-legged 2-pincered bug". This is the proof mark for the Kiel, Germany proofhouse. Lastly, the proof house adds a two letter code to indicate the year the gun was proofed. The table at right shows the letter to digit mapping. For example: a SIG-Sauer stamped KB was proofed in 1991. One stamped JJ was proofed in '88.
American-made SIG-Sauers, namely the P229 and P239, are proofed by SIGARMS to SAAMI specifications at the factory. Once proofed, a circle-'P' emblem is stamped into the lower lug of the barrel.



























