hump Posted January 9, 2019 Share Posted January 9, 2019 I have a new SPS Vista Short chambered in 9mm on the way. I need to order magazines. I need advice on whether to stay with the SPS factory mags or go with the new STI mags. Link to comment Share on other sites More sharing options...
mro111lland Posted January 10, 2019 Share Posted January 10, 2019 I have a Vista short also great gun factory mags are hit and miss I run old style sti mags with spacers and grams springs followers and base pads. I tried 2 mbx mags but kept having a really weird feeding issue with them. I think it's because the feed lips are shorter on the mbx mags then sti mags don't think the wrong was being controlled long enough to make it under the extractor mbx was happy to take them back have not tried the new sti mags yet Link to comment Share on other sites More sharing options...
hump Posted January 10, 2019 Author Share Posted January 10, 2019 2 minutes ago, mro111lland said: I have a Vista short also great gun factory mags are hit and miss I run old style sti mags with spacers and grams springs followers and base pads. I tried 2 mbx mags but kept having a really weird feeding issue with them. I think it's because the feed lips are shorter on the mbx mags then sti mags don't think the wrong was being controlled long enough to make it under the extractor mbx was happy to take them back have not tried the new sti mags yet I may just order SPS factory mags for now. Did you make any changes to the gun? Link to comment Share on other sites More sharing options...
AHI Posted January 10, 2019 Share Posted January 10, 2019 (edited) I have MBX mags ammo overall length is the key. 1.165 to 1.170 All 5 run 100%. The sps mag not so much. Edited January 10, 2019 by AHI Link to comment Share on other sites More sharing options...
mro111lland Posted January 10, 2019 Share Posted January 10, 2019 As far as changes for the first 10000 rounds no other than the POS mount it comes with. I put a90 degree mount on it. Last season I replaced the fire control with cylender and slide kit installed an sti grip and Dawson mag well aftc extractor had 2 holes added to the barrel Link to comment Share on other sites More sharing options...
mro111lland Posted January 10, 2019 Share Posted January 10, 2019 9 minutes ago, AHI said: I have MBX mags ammo overall length is the key. 1.265 to 1.270 All 5 run 100%. The sps mag not so much. I tried every conceivably seating debth even had the owner of mbx on the phone trying to figure it out sent them back to him they ran perficet for him he sent me new ones same thing. At area 3 last year one of the open guys on my squad had the exact same problem with them he went back to sti problem went away Link to comment Share on other sites More sharing options...
mro111lland Posted January 10, 2019 Share Posted January 10, 2019 14 minutes ago, AHI said: I have MBX mags ammo overall length is the key. 1.265 to 1.270 All 5 run 100%. The sps mag not so much. 1.265 you must be running 38 super Link to comment Share on other sites More sharing options...
hump Posted January 10, 2019 Author Share Posted January 10, 2019 (edited) 36 minutes ago, mro111lland said: As far as changes for the first 10000 rounds no other than the POS mount it comes with. I put a90 degree mount on it. Last season I replaced the fire control with cylender and slide kit installed an sti grip and Dawson mag well aftc extractor had 2 holes added to the barrel Did the popple holes make a big difference. Edited January 10, 2019 by hump Correct spelling Link to comment Share on other sites More sharing options...
mro111lland Posted January 10, 2019 Share Posted January 10, 2019 9 minutes ago, hump said: Did the popple holes make a big difference. Yes they did also drilled bleeders on the front port of the comp tracks up and down better Link to comment Share on other sites More sharing options...
AHI Posted January 10, 2019 Share Posted January 10, 2019 1 hour ago, mro111lland said: 1.265 you must be running 38 super fat fanger 1.165 to1.170 my bad Link to comment Share on other sites More sharing options...
Jfitz427 Posted January 10, 2019 Share Posted January 10, 2019 (edited) I don’t have a vista, but I have an SPS Pantera. My Sps mags run 100%. But 40 is much much less finiky then 9mm. Much easier to make a 40 and it’s mags run well in a 2011. It’s totally possible that 9mm sps mags will work just as well as my 40 mags do. But why bother when sti cost exactly the same, assuming you’re going to change the guts and basepads. I changed out the guts in mine as the follower that comes in it are total crap. SPS mag is 57-90 dollars depending which one you buy. 18 for springs and followers and 30ish for a basepad. Sti mag tube is 59, 18 for guts and 30ish for a basepad. So the price is the same. One thing I can say about the difference is the sti mags are much more stout. The metal seems harder and a bit thicker. They’ll hold there shape much longer, and have a longer overall lifespan. And another thing, the new Sti mags run straight out of the package, no feed lip or body dimension tuning needed. Most people have to tune their sps mags. Definitely utilize the 2 mags that come with the gun though. They’re a lot like the old and very desiresable Svi mags, they can possibly hold one more round then sti. The 140s that comes with it with a taran 7mm and the taran ultra thin follower they’ll hold minimum 25, if not 26rds. But like I said the basepad and sprIng an follower that comes with the mag are junk. Edited January 10, 2019 by Jfitz427 Link to comment Share on other sites More sharing options...
hump Posted January 10, 2019 Author Share Posted January 10, 2019 11 hours ago, Jfitz427 said: I don’t have a vista, but I have an SPS Pantera. My Sps mags run 100%. But 40 is much much less finiky then 9mm. Much easier to make a 40 and it’s mags run well in a 2011. It’s totally possible that 9mm sps mags will work just as well as my 40 mags do. But why bother when sti cost exactly the same, assuming you’re going to change the guts and basepads. I changed out the guts in mine as the follower that comes in it are total crap. SPS mag is 57-90 dollars depending which one you buy. 18 for springs and followers and 30ish for a basepad. Sti mag tube is 59, 18 for guts and 30ish for a basepad. So the price is the same. One thing I can say about the difference is the sti mags are much more stout. The metal seems harder and a bit thicker. They’ll hold there shape much longer, and have a longer overall lifespan. And another thing, the new Sti mags run straight out of the package, no feed lip or body dimension tuning needed. Most people have to tune their sps mags. Definitely utilize the 2 mags that come with the gun though. They’re a lot like the old and very desiresable Svi mags, they can possibly hold one more round then sti. The 140s that comes with it with a taran 7mm and the taran ultra thin follower they’ll hold minimum 25, if not 26rds. But like I said the basepad and sprIng an follower that comes with the mag are junk. Thanks for the detailed information. I am ordering STI mags. Link to comment Share on other sites More sharing options...
hump Posted January 19, 2019 Author Share Posted January 19, 2019 I went with STI mags and they were flawless out of the box. I will be changing the springs and followers to TTI to hold more rounds but I'm impressed so far. Link to comment Share on other sites More sharing options...
Bwilmot Posted January 19, 2019 Share Posted January 19, 2019 The mbxrun just fine out of my vista. I load Everglades v2 115 jhp @ 1.16 and never had an issue. The Popple holes are what turned the vista from a mediocre open gun to a great open gun. Link to comment Share on other sites More sharing options...
funflyr Posted February 21, 2019 Share Posted February 21, 2019 Stock 140mm STI mags work great in mine. 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