The project took a little bit of trial and error, but we got it figured out today.
Step 1: Create Threads.
We sent the SR9 to CF Gunworks where they threaded the factory barrel, machined an extension, and lapped it in to the slide.
Step 2: Add Silencer.
In this instance we were using a Thompson Machine Isis9 with a TM booster.
Step 3: Jam.
We couldn't get the pistol to kick the slide back even halfway. The pistol and suppressor were cleaned and lubricated per manufacturers instructions. We did a little bit of polishing on the barrel and liberally applied Slide Glide to the rails and some other surfaces. At this point we were managing to stovepipe the empties.
Step 4: New Spring.
After a little bit of research we couldn't really find many others who had successfully suppressed an SR9 but I found Galloway Precision, who makes springs for them. They stated that the factory weight recoil spring is 18 pounds, and they made a 15 pound spring. We ordered it up and gave the SR9 another try. http://www.gallowayprecision.com/sr9andsr40parts.html
Step 5: Success!
With the new spring we managed to get the slide cycling all the way, stopping just outside of battery. We've attributed this to being a new spring and a few boxes of WWB should cure that issue.
Thanks to: CF Gunworks, Brooks from Thompson Machine, Corey at SSNFA, Galloway Precision for all the help!
Step 1: Create Threads.
We sent the SR9 to CF Gunworks where they threaded the factory barrel, machined an extension, and lapped it in to the slide.
Step 2: Add Silencer.
In this instance we were using a Thompson Machine Isis9 with a TM booster.
Step 3: Jam.
We couldn't get the pistol to kick the slide back even halfway. The pistol and suppressor were cleaned and lubricated per manufacturers instructions. We did a little bit of polishing on the barrel and liberally applied Slide Glide to the rails and some other surfaces. At this point we were managing to stovepipe the empties.
Step 4: New Spring.
After a little bit of research we couldn't really find many others who had successfully suppressed an SR9 but I found Galloway Precision, who makes springs for them. They stated that the factory weight recoil spring is 18 pounds, and they made a 15 pound spring. We ordered it up and gave the SR9 another try. http://www.gallowayprecision.com/sr9andsr40parts.html
Step 5: Success!
With the new spring we managed to get the slide cycling all the way, stopping just outside of battery. We've attributed this to being a new spring and a few boxes of WWB should cure that issue.
Thanks to: CF Gunworks, Brooks from Thompson Machine, Corey at SSNFA, Galloway Precision for all the help!
Last edited:
