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New to Us Advantage Arms Conversion-nuances

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Post by Grouse Tue May 14, 2024 8:23 pm

Hi Faithful,
Recently acquired a used Advantage Arms Target conversion. Cleaned it up, with special attention to the chamber (scrubbed carbon ring out. Lubed it up well as it seemed to have sat for a second. Replaced recoil buffer  and recoil spring with 8lb Nelson spring and buffer. Slapped it on a RIA frame. For functions sake ran 25 rounds each  of CCI SV and Aguila SE (what was hand) with no Misfires, FTF , or FTE. 

Might be the chicken little in me, but my family LOVES our Nelsons  and therefore I’m looking for aspects of the AA conversion that may cause hiccup. Son will likely run as an iron sight gun so no optic will be mounted ….for now. 
Any nuances those with AA conversions would like to bring up? 
Thanks in advance!

Grouse

Posts : 42
Join date : 2018-01-25
Location : Canton, Ohio

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Post by Tripscape Wed May 15, 2024 12:06 am

My firing pin spring was too light. On top of that the firing pin is cutin such way that there is a vertical sharp cut before the taper. So what happens is that the firing pin cut pre-taper digs into the firing pin channel with not enough firing pin spring force to push it back = full auto. Fixing it was super easy. Remove the firing pin assembly via 1 screw and a roll pin. Replace spring with stiffer spring from home depot assorted spring pack. Sand the firing pin surface and especially that step-down to create radius that wont catch. Many rounds down since then with no issues.  Was very hard to trace that issue initially until I feel tested firing pin spring resistane on AA vs Nill vs Marvel side by side.

Tripscape

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Join date : 2019-03-23

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Post by Tripscape Wed May 15, 2024 12:14 am

My extractor was also not well cut. It did not have proper radius to go into the barrel recess. This also made me think the extractor was setting rounds off full auto. Fix was easy too. 1 roll pin out. Profile the extractor. To give it back extraction space/claw/catch - take off material on the front of extractor leg internal to the slide, that will close it in more and give back the width you took off when profiling. if you ever need to do that...

Tripscape

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Post by xmastershooter Wed May 15, 2024 7:28 pm

I like the Marvel Custom Pro AA very much. The only thing I noticed was that after the 5th round, it use to always locked back. Now it may or may not. Any hints on how to fix this would be appreciated

xmastershooter

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Post by james r chapman Thu May 16, 2024 5:58 am

xmastershooter wrote:I like the Marvel Custom Pro AA very much. The only thing I noticed was that after the 5th round, it use to always locked back. Now it may or may not. Any hints on how to fix this would be appreciated
The slide notch may be rounded. Maybe peen it back into shape.
james r chapman
james r chapman
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Post by Jack H Thu May 16, 2024 12:30 pm

The Advantage Arms 1911 conversion has had at least 3 designs of the slide stop insert.  The most recent one I know of is a squarish side plate with two tiny screws behind the stop notch.  Steve at AA replaced my slide when the earlier design failed. 
Also AA has had at least 3 buffer designs that I know of.
Jack H
Jack H

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Post by xmastershooter Thu May 16, 2024 3:53 pm

Hi Jack, do you have the contact info for Steve at AA?  Thanks

xmastershooter

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Post by Jack H Fri May 17, 2024 1:39 am

xmastershooter wrote:Hi Jack, do you have the contact info for Steve at AA?  Thanks

Try this for AA.
https://www.advantagearms.com/mm5/merchant.mvc?Screen=SFNT

I have one AA unit left, including a Bob Marvel prepared barrel for it #012
Jack H
Jack H

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Post by Grouse Sat May 18, 2024 7:57 am

Thanks for the info gents….it appears the one I got was the iteration with the built up slide stop notch. There was no buffer in the recoil spring when I got it…had a Nelson buffer in my box. a bit concerned as  over tightening guide rod seems to affect “tightness” of the unit that may affect function

Grouse

Posts : 42
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Post by Jack H Sat May 18, 2024 5:52 pm

Grouse wrote:Thanks for the info gents….it appears the one I got was the iteration with the built up slide stop notch. There was no buffer in the recoil spring when I got it…had a Nelson buffer in my box. a bit concerned as  over tightening guide rod seems to affect “tightness” of the unit that may affect function

The "no buffer" as I recall had a relief cut in the back of the dust cover so it would never reach where the buffer would be.  I believe you then would have to have just the right recoil spring and ammo combination.
Jack H
Jack H

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