Question about SIG pistols.

If it has a decocker it is a DA/SA. Not sure what your trying to ask but that is my general rule of thumb. Some pistols like the USP (in Variants 1-2) are able to be used DA/SA as well as SAO due to the fact it has a Decock and safety.

And the Armalite AR-24 can either be carried "cocked and locked" (as I personally prefer) or traditional DA/SA, though it does not have a decocker. Some versions of the CZ have similar set-ups.

Boarhunter

I'm not exactly sure of all the differences between the P6 and P225, but one difference is the hammer. The P6 usually has the hook hammer to let armorers know if the issued gun was ever dropped.

IIRC the P6 designation for the Sig was from the German police testing in the 70's. HK submitted the P7, Walther submitted the P5. Sig changed the model # to 225 when importing to the USA.

AFAIK the P6 has a stiffer DA trigger pull, replacing the springs might alleviate that. Other than the distinctive "hook" hammer and the unfortunately craptacular import markings on all the models I've seen, those are about the only differences.

I like my P6.