thormx538 Posted September 27, 2017 Share Posted September 27, 2017 (edited) Follow up on the mags. The blued mag on the left is the (presumably) unmodified factory mag, the middle is a mag assembled by the previous owner, and on the right is a mag that I put together after buying the gun. Seems like there has been material removed from the feed lips. I got the gun with the original blued factory mag and two silver ones, and then I went and built 2 additional ones. I used MecGar tubes from Greg Cote, and all five mags say "MG P16-40" on them so I assume they're all MecGar. All of the mags measure around 0.355 - 0.360 wide at the front of the feed lips, and 0.360 - 0.365 at the rear. My question is, did any of you other guys with .40 doublestacks have to relieve the mag feed lips as such? If yes, is there a template/measurements available in a post or FAQ somewhere that you know of, or should I just relieve the front of the lips a little at a time? Edited September 27, 2017 by thormx538 Link to comment Share on other sites More sharing options...
thormx538 Posted September 30, 2017 Share Posted September 30, 2017 Got it running finally. The MecGar Para mags from Greg Cote need to be modified to match the factory profile where the feed lips are approximately 0.500" long. I also put a Wilson extractor in and had to take a lot more material than I was expecting off of the feed edge, but I put about 360rds through it today with no issues at all. Link to comment Share on other sites More sharing options...
jrswanson1 Posted October 1, 2017 Share Posted October 1, 2017 I tried out the Remington and RIA magazines with Arredondo extensions last night. I am now able to fit 22 rounds into the Remington magazines, and they ran without a hitch. I'm still at 21 with the RIA. And the RIA won't fit into the gun when it's full. Downloading it to 10 and it works. I'll have to switch out the magazine extension to the original. Link to comment Share on other sites More sharing options...
1981Shooter Posted October 1, 2017 Share Posted October 1, 2017 2 hours ago, jrswanson1 said: I tried out the Remington and RIA magazines with Arredondo extensions last night. I am now able to fit 22 rounds into the Remington magazines, and they ran without a hitch. I'm still at 21 with the RIA. And the RIA won't fit into the gun when it's full. Downloading it to 10 and it works. I'll have to switch out the magazine extension to the original. Was that with the stock follower and spring in them Remington mags? Link to comment Share on other sites More sharing options...
hump Posted October 1, 2017 Share Posted October 1, 2017 10 hours ago, jrswanson1 said: I tried out the Remington and RIA magazines with Arredondo extensions last night. I am now able to fit 22 rounds into the Remington magazines, and they ran without a hitch. I'm still at 21 with the RIA. And the RIA won't fit into the gun when it's full. Downloading it to 10 and it works. I'll have to switch out the magazine extension to the original. What Arredondo extensions did you use. I only see the STI version listed. Link to comment Share on other sites More sharing options...
jrswanson1 Posted October 2, 2017 Share Posted October 2, 2017 23 hours ago, 1981Shooter said: Was that with the stock follower and spring in them Remington mags? Stock spring, Arredondo follower. 15 hours ago, hump said: What Arredondo extensions did you use. I only see the STI version listed. https://www.arredondoaccessories.com/collections/base-pads/products/base-pads-with-inserts?variant=30284779213 Link to comment Share on other sites More sharing options...
SkiSoloII Posted October 4, 2017 Share Posted October 4, 2017 (edited) Sorry if this horse has been thoroughly beaten. Am I to understand that the Remington RP9 9mm magazine will fit the RIA double-stack 9mm semi auto, and that the Arredondo 38s/40 follower and extension will work with it to make it a 20+ round magazine for the gun? Thanks, Dave Edited October 5, 2017 by SkiSoloII Confirm caliber usage Link to comment Share on other sites More sharing options...
jrswanson1 Posted October 5, 2017 Share Posted October 5, 2017 18 hours ago, SkiSoloII said: Sorry if this horse has been thoroughly beaten. Am I to understand that the Remington RP9 9mm magazine will fit the RIA double-stack 9mm semi auto, and that the Arredondo 38s/40 follower and extension will work with it to make it a 20+ round magazine for the gun? Thanks, Dave Yes and yes. Link to comment Share on other sites More sharing options...
usmc90 Posted October 6, 2017 Share Posted October 6, 2017 Has any used the Taylor Freelance widebody magwell for this and found mags that work with it without spending the $150 per mag that say MBX wants ? Link to comment Share on other sites More sharing options...
dogtired Posted October 7, 2017 Share Posted October 7, 2017 I think the MBX are $120. I have Canadian Para mags for both the. 40 and 9mm with Dawson basepads and the Fattie magwell. If you can find them you are looking at $70-90 rebuilt. SPS mags run about $75 new. Act mags work with the Dawson bases available in 40 only. Link to comment Share on other sites More sharing options...
Wvaughn7 Posted October 9, 2017 Share Posted October 9, 2017 So I have followed this thread for probably two years now and am still running into problems with magazines. I have Dawson tool less pads that i have modified to lock in the gun and drop free no problem, but with these pads and an Arredondo insert that has been modified I can only get 17 rounds into each mag. The spring doesn't feel like it's starting to get tight on the rounds up to this point, it just locks up solid and will not accept another round. My factory mag with the wedge pad will fit 18 so you can see why this is disappointing. I am using the Arredondo extended spring and the stock follower if this makes a difference, but I do have Arredondo followers on the way to try as well. I have RP9 mags and the Arredondo base pads with inserts coming as referenced above and am hoping for 21-22 rounds, but would at least like to get these current mags to 19-20. Any advice or tricks to get these to work would be appreciated. Link to comment Share on other sites More sharing options...
dogtired Posted October 9, 2017 Share Posted October 9, 2017 You can try losing the Arrendondo insert. Sometimes they become a salt shaker though. Link to comment Share on other sites More sharing options...
Wvaughn7 Posted October 9, 2017 Share Posted October 9, 2017 Thanks for the tip, but I have tried losing the insert and they salt shaker every time past 18 rounds, which only gains me one reliably. I did think about trimming the inserts shorter than the ribs on the magazine body though. My thinking was that the "fingers" on the insert are hitting the ribs bending them inward which is catching either the spring or follower. I had a Glock magazine that had the spring catching the insert in the base pad that once corrected allowed me two more rounds. Might be worth a try and worst I do is ruin a 7 dollar insert. Link to comment Share on other sites More sharing options...
dogtired Posted October 9, 2017 Share Posted October 9, 2017 The ribs should knit with the insert not overlap. You may be reversed. Link to comment Share on other sites More sharing options...
Talon75 Posted October 10, 2017 Share Posted October 10, 2017 Does anybody know if the SV/ STI Dawson basepads will fit the para/mecgar mags? I realize they usually have pads for Para only, but just not familiar with the difference if there is one. With the Dawson Para pads being out of stock I guess the Arredondo's would be a decent choice( actually the only other choice I can find), just wonder how well they hold up. Thanks Link to comment Share on other sites More sharing options...
hump Posted October 10, 2017 Share Posted October 10, 2017 7 hours ago, Talon75 said: Does anybody know if the SV/ STI Dawson basepads will fit the para/mecgar mags? I realize they usually have pads for Para only, but just not familiar with the difference if there is one. With the Dawson Para pads being out of stock I guess the Arredondo's would be a decent choice( actually the only other choice I can find), just wonder how well they hold up. Thanks I was told by Dawson that the Para style pads were discontinued permanently. Link to comment Share on other sites More sharing options...
thormx538 Posted October 12, 2017 Share Posted October 12, 2017 On 10/10/2017 at 8:39 AM, hump said: I was told by Dawson that the Para style pads were discontinued permanently. Thats too bad. So Arredondo is the only option left for base pads it seems. Does anyone know if the Arredondos offer the same capacity as the Dawsons? Link to comment Share on other sites More sharing options...
hump Posted October 12, 2017 Share Posted October 12, 2017 4 hours ago, thormx538 said: Thats too bad. So Arredondo is the only option left for base pads it seems. Does anyone know if the Arredondos offer the same capacity as the Dawsons? I will know when my Arrendondo pads arrive later today. Link to comment Share on other sites More sharing options...
usmc1094 Posted October 12, 2017 Share Posted October 12, 2017 I got mine yesterday and could get 21 in them. Link to comment Share on other sites More sharing options...
Wvaughn7 Posted October 12, 2017 Share Posted October 12, 2017 I just received the Arredondo pads today and tried them and am stuck at 19. I did use the insert and have an extra power spring that is almost new though. This is the same thing I have finally got my Dawson pads to load to after further modifying the insert. These pads will also not lock in my gun without modification with the factory magwell. My RP9 mag bodies should be here tomorrow and I will update capacities on them as well. Link to comment Share on other sites More sharing options...
hump Posted October 13, 2017 Share Posted October 13, 2017 I got the Arredondo pads today and get 21 rounds of 9mm and 18 rounds of 40 cal. I called Arredondo and confirmed this is correct. Basically you get one less round than the Dawson pads. Link to comment Share on other sites More sharing options...
usmc1094 Posted October 13, 2017 Share Posted October 13, 2017 I guess I should have been more clear. I got 21 rounds of 9mm in the RP9 mags, with the inserts and RP9 spring and followers. Link to comment Share on other sites More sharing options...
thormx538 Posted October 13, 2017 Share Posted October 13, 2017 (edited) 15 hours ago, hump said: I got the Arredondo pads today and get 21 rounds of 9mm and 18 rounds of 40 cal. I called Arredondo and confirmed this is correct. Basically you get one less round than the Dawson pads. Dang, that's too bad. Thanks. Edited October 13, 2017 by thormx538 Link to comment Share on other sites More sharing options...
jrswanson1 Posted October 14, 2017 Share Posted October 14, 2017 17 hours ago, thormx538 said: Dang, that's too bad. Thanks. If you use the Arredondo follower, you can get 22 in the RP9 mags. Link to comment Share on other sites More sharing options...
usmc90 Posted October 14, 2017 Share Posted October 14, 2017 (edited) Which Arredondo pads are you using for 9mm P-18/RP9 mags ? Also for those with the RP9 mags what’s the chance I could get one of you to give a length measurement from top of feed lip to the bottom minus the base pad ? Edited October 14, 2017 by usmc90 Link to comment Share on other sites More sharing options...
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