STI rangemaster, but, and its a big but, you have to cut the dust cover... My gs didn't want to, I didn't want to, but I did it... Make sure you swap out for an aftec extractor. The stock extractor gave me problems.
Exactly what I did but forgot to have stirrups cuts, as per the IPSC Classic division requirements.
I sent the pistol yesterday to have the stirrups machined.




















































