jimbullet Posted January 2, 2015 Share Posted January 2, 2015 I bought a new nitro fin slide stop for my STI Edge. I thought it would be a drop in part but apparently needs some work as the gun wont go all the way into battery as if something is holding it up. I manage to install the slide stop and can rack the slide and it does go forward but doesnt go into full battery leaving about 1/4 inch before closing up. I have removed the SS (slide stop), field stripped the gun and this is what I find: a. Frame and slide only with slide stop - it goes through wel b. barrel link and slide stop goes through fine. All together, it appears it would not go full battery. What is the fix here? Should I get some sand paper and try to sand down the slide stop pin? Any input appreciated. Cheers Link to comment Share on other sites More sharing options...
robb315 Posted January 2, 2015 Share Posted January 2, 2015 Are you sure the slide stop is going through the link upon assembly? Link to comment Share on other sites More sharing options...
jimbullet Posted January 2, 2015 Author Share Posted January 2, 2015 Yes,positive on that. Link to comment Share on other sites More sharing options...
Rckymtnshooter Posted January 2, 2015 Share Posted January 2, 2015 Measure the old pin with a caliper and see if it is out of round. The pin may have been fit to your gun. I ran into this with a factory sti gun. I did use emery cloth and a file to refit a new pin. My lockup with the new pin prior to fitting it was just like you're describing. Link to comment Share on other sites More sharing options...
Iceman2733 Posted January 2, 2015 Share Posted January 2, 2015 (edited) Measure the OD of the new pin and compare it to the old one. I bet the new one has a larger OD. My edge did this with one and i had to lightly sand material off of the pin. Edited January 2, 2015 by Iceman2733 Link to comment Share on other sites More sharing options...
jimbullet Posted January 2, 2015 Author Share Posted January 2, 2015 The original STI slide stop pin measuring with a caliper is 0.196 with the nitro fin measuring 0.199. Does that mean I need to reduce it to the STI measurements and it should then work fine? It did however go through the barrel link and the frame with ease so I thought this would have been within tolerance? Link to comment Share on other sites More sharing options...
jimbullet Posted January 2, 2015 Author Share Posted January 2, 2015 Measure the OD of the new pin and compare it to the old one. I bet the new one has a larger OD. My edge did this with one and i had to lightly sand material off of the pin. what is OD? overall diameter? Link to comment Share on other sites More sharing options...
jimbullet Posted January 2, 2015 Author Share Posted January 2, 2015 stand corrected, re-measured the original slide stop pin and its 0.191 and the nitro fin is 0.199. Link to comment Share on other sites More sharing options...
StraightUp_OG Posted January 2, 2015 Share Posted January 2, 2015 I would remove the material from the lower lugs and fit the barrel to the new slide stop not the other way around. This way the radius and the seat of the slide stop to barrel is even and correct. Link to comment Share on other sites More sharing options...
JMike Posted January 2, 2015 Share Posted January 2, 2015 (edited) Is your Edge hard chromed? My Edge is hard chromed and I had the same problem. I used heavy grit sandpaper on the slide stop pin, followed with lower grit to smooth it out. Took less than 30 minutes to solve the problem. These slide stop pins are advertised to be .199. Edited January 2, 2015 by JMike Link to comment Share on other sites More sharing options...
jimbullet Posted January 2, 2015 Author Share Posted January 2, 2015 Mine is blued not hard chrome. I'm more keen on altering the slide stop rather than the lugs as I would like the old slide stop to still work as a spare. I think altering the lugs would make it dedicated for the nitrofin alone. I still like the idea that I can use the old slide stop to work in case I ever need it. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
JMike Posted January 2, 2015 Share Posted January 2, 2015 That was my thinking as well. Once I modified the Nitro pin, I had no more problems. YMMV. Good luck to you. Link to comment Share on other sites More sharing options...
jimbullet Posted January 2, 2015 Author Share Posted January 2, 2015 Hi JMike, How did you sand it down? Did you make full turns and I suppose you have to do it all in one direction (i.e. clockwise)? Link to comment Share on other sites More sharing options...
JMike Posted January 2, 2015 Share Posted January 2, 2015 (edited) Yeah, full turns forward & backwards. Once I got it to where it fit & functioned, I used very light grit sandpaper, followed by Emory cloth to make it super smooth.It worked well for me. Let us know how you make out. Edited January 2, 2015 by JMike Link to comment Share on other sites More sharing options...
jcc7x7 Posted January 3, 2015 Share Posted January 3, 2015 Make sure your original pin is not tweeked/ bent to fit the frame. sometimes you can tell by rolling it on a granite block or piece of glass Stop by a machine shop and ask if they can tell quick or do what every body else is doing and bring it down smaller. Which I would do also!!!! Link to comment Share on other sites More sharing options...
jimbullet Posted January 3, 2015 Author Share Posted January 3, 2015 I dont think its bent as it does go in smoothly. Its just that the slide will just not close leaving about 1/4 inch. So far have sanded down from 0.199 to 0.195 and the slide will still not close but noticeably has improved with just about 1/8 inch before closing. Getting there slowly but doing it by hand is painfully slow. Im afraid to use a dremel as that can easily make it not round anymore. The original slide stop pin measured about 0.191, so just a bit more.... Link to comment Share on other sites More sharing options...
dansedgli Posted January 3, 2015 Share Posted January 3, 2015 Put the pin in a drill and hold sandpaper around it. Link to comment Share on other sites More sharing options...
DGS Posted January 4, 2015 Share Posted January 4, 2015 I think your original measurement of .196 is closer to correct. .191 would be way undersized for a slide stop! Link to comment Share on other sites More sharing options...
jimbullet Posted January 4, 2015 Author Share Posted January 4, 2015 Lucky I posted here. Pin size now down to 0.194 and it fits. Fortunately I didn't sand it down further. Fits like a charm. I just need to get to the range and try it out. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
DGS Posted January 4, 2015 Share Posted January 4, 2015 "Measure twice, cut once." Link to comment Share on other sites More sharing options...
bountyhunter Posted January 4, 2015 Share Posted January 4, 2015 (edited) Measure the old pin with a caliper and see if it is out of round. The pin may have been fit to your gun. I once thought of buying an extended slide release for my STI but I called them first. They warned me that it might need fitting so I never changed it. I think they fit the guns tight. Edited January 4, 2015 by bountyhunter Link to comment Share on other sites More sharing options...
Ultimo-Hombre Posted January 5, 2015 Share Posted January 5, 2015 I would remove the material from the lower lugs and fit the barrel to the new slide stop not the other way around. This way the radius and the seat of the slide stop to barrel is even and correct. I believe this is the best solution. Link to comment Share on other sites More sharing options...
b1gcountry Posted January 5, 2015 Share Posted January 5, 2015 Clean the pin and the frame really good to get the grit out... Link to comment Share on other sites More sharing options...
msg73 Posted January 5, 2015 Share Posted January 5, 2015 I agree that fitting the lower lugs to the SS is the more appropriate solution as .191 is very undersized. However, sanding the SS pin down keeps you from ruining the barrel lugs if done incorrectly. Seems like the OP did the latter and had good results. I hope the sanding of the SS pin was limited to where the lower lug engages. If you sand the entire pin down, you add more slop to the SS pin to frame fit. Link to comment Share on other sites More sharing options...
jimbullet Posted January 6, 2015 Author Share Posted January 6, 2015 I actually wanted to sand the entire pin and not thinking that I would only need to sand the area where they actually contact...I was unsuccessful though at reducing the diameter of the entire length of the pin perhaps due to my not very steady hands. So the overall result was that the pin near the slide stop (for the lack of term of that piece) was sanded down to about 0.197 with the rest of the pin down to between 0.193/ 0.194. I just need to test fire this now. Also I noticed that I have the tendency of applying pressure on the nitro fin that when I manually rack the slide, its actually going up and engaging the slide lock. I suspect that it will result in a premature slide lock back and so I am thinking to smoothen that portion out that engages the slide lock. Given that I am using this as an IPSC pistol, I dont really need it to lock the slide back after the last round. I thought of drilling a detent but with the lack of a drill press, I would propably not attempt to. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now