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December 3rd, 2011, 02:49 PM
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#1 | | Squad Leader
Join Date: Nov 2006 Location: NorthWest
Posts: 249
| Promag now making split rail arms 18 clone
They have the other sei/sadlak/arms clone mounts, now they added the split rail. First I've seen it. Wish they used the same stripper clip guide mechanism for attachment (theirs has a screw that comes in direct contact with the receiver unlike the original arms 18). Still cool for a lot of folks that don't have or can't find an original. http://www.gunsamerica.com/968886659...lack_Gloss.htm
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December 3rd, 2011, 05:08 PM
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#2 | | Designated Marksman
Join Date: Aug 2010 Location: machine shop
Posts: 685
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Oddly it isn't on ProMag's own website. I'm not real fond of their magazines, but...
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December 3rd, 2011, 07:52 PM
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#3 | | Squad Leader
Join Date: Nov 2006 Location: NorthWest
Posts: 249
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Yeah, after seeing the gunsamerica add I went to their site and didn't see it. Is weird that it isn't on there. I've done just a casual search and only found it on that gunsamerica add.
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January 12th, 2012, 08:31 PM
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#4 | | Snappin In
Join Date: Nov 2011 Location: West Coast, CA
Posts: 17
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I bought my ProMag scope mount from Midway. http://www.midwayusa.com/product/416...ount-m1a-matte
When I got it, it was a split mount, no bitching, just saying. I like it.
Tom 
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January 12th, 2012, 09:14 PM
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#5 | | Designated Marksman
Join Date: Feb 2009 Location: (the once and future) Vermont Republic
Posts: 594
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Looking at the photo gallery on Guns America, I can see that they've improved the mount from previous versions.
1: They are now using a dovetail key to attach the rear of the mount to the stripper clip guide dovetail.
2: They are now using a wide pad screw to apply pressure to the receiver ring at the front of the mount, instead of a cup point set screw.
3: The side mounting bolt has changed, but I can't see quite how. It appears to now be an Allen screw with a jam nut, changed from a simple captive hex bolt.
These were my chief complaints about the previous version. Not sure how Dick Swan is going to feel about it, though.
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January 12th, 2012, 09:28 PM
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#6 | | Designated Marksman
Join Date: Aug 2010 Location: machine shop
Posts: 685
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I prefer the split rail version. Mostly because using rings in the area of the ejection port can lead to failures to completely eject spent cases. Not on all rifles, but often enough to be really annoying!
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January 12th, 2012, 09:36 PM
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#7 | | Designated Marksman
Join Date: Feb 2009 Location: (the once and future) Vermont Republic
Posts: 594
| Quote:
Originally Posted by Later2u  | Tom-
Did the packaging on yours give the part number? Is it still PM081a?
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January 12th, 2012, 09:53 PM
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#8 | | Snappin In
Join Date: Nov 2011 Location: West Coast, CA
Posts: 17
| Quote:
Originally Posted by LemmyCaution Tom-
Did the packaging on yours give the part number? Is it still PM081a? | I don't have the packing anymore, but my invoice has the same number, PM081A, same as on the link in my post. The one in the picture shows no split rail, but the one I received was a split rail.
Tom
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January 13th, 2012, 10:25 AM
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#9 | | Platoon Commander
Join Date: Dec 2011 Location: Florida
Posts: 494
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ProMag? Seriously? Their mags suck, so id be leary of their mounts. Im fairly new to the M14 world but they dont inspire confidence i may be off though
I would like a small rail that mounts to the clip guide and does NOT bridge the receiver for a small red dot
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January 13th, 2012, 10:54 AM
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#10 | | Old Salt
Join Date: Sep 2010 Location: Texas
Posts: 1,521
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i agree with mindfield. i have several Sig Sauer 228/229 ProMags and they are awful. they are barely range-mag worthy. im thinking of actually junking them or putting quality springs and floor plates in them. they are a real pain.
lets hope their mounts are better off.
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January 13th, 2012, 08:07 PM
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#11 | | Snappin In
Join Date: Nov 2011 Location: West Coast, CA
Posts: 17
| Quote:
Originally Posted by Mindfield ProMag? Seriously? Their mags suck, so id be leary of their mounts. Im fairly new to the M14 world but they dont inspire confidence i may be off though | I hope you don't have one of those Chinese ripoff M14's. Quote:
Originally Posted by Whatsinaname181
lets hope their mounts are better off.
| The ProMag mount pictured is rock solid. I don't know anything about their mags.
Tom
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January 14th, 2012, 03:15 AM
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#12 | | Designated Marksman
Join Date: Feb 2009 Location: (the once and future) Vermont Republic
Posts: 594
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Tom-
The ProMag mount you have is a copy of Dick Swan's design. I don't know if it's licensed or not, and I'd have to check the packaging on mine, but I believe the ProMag mount is cast in China.
So you might wish to rethink some of your bombast and stop ragging on other forum members until these details get straightened out.
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January 14th, 2012, 05:17 AM
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#13 | | Platoon Commander
Join Date: Aug 2010 Location: New York
Posts: 523
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Can someone give me the rundown on the pros and cons of split vs non split, not intending to hijack the thread here but if someone has a quick few lines on why you would choose one over the other that would be awesome..
TIA
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January 14th, 2012, 06:28 AM
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#14 | | Designated Marksman
Join Date: Feb 2009 Location: (the once and future) Vermont Republic
Posts: 594
| Quote:
Originally Posted by cachunk Can someone give me the rundown on the pros and cons of split vs non split, not intending to hijack the thread here but if someone has a quick few lines on why you would choose one over the other that would be awesome..
TIA | I prefer the split mount for the following reasons:
I only use the foremost and rearmost slots on my present full railed mount. These are the same positions as the split rail, thus the rest of the rail is superfluous.
As such, the split rail mount is also a few ounces lighter, always a good thing on the M1a.
The cut out section should eliminate the possibility of ejection failures noted with full length ARMS/ProMag mounts.
If I had it to do over, I'd have looked around for a genuine ARMS split rail mount.
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January 14th, 2012, 12:01 PM
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#15 | | Lifer
Join Date: Jul 2003 Location: Las Vegas, NV, USA
Posts: 7,812
| Quote:
Originally Posted by LemmyCaution Looking at the photo gallery on Guns America, I can see that they've improved the mount from previous versions.
1: They are now using a dovetail key to attach the rear of the mount to the stripper clip guide dovetail.
2: They are now using a wide pad screw to apply pressure to the receiver ring at the front of the mount, instead of a cup point set screw.
3: The side mounting bolt has changed, but I can't see quite how. It appears to now be an Allen screw with a jam nut, changed from a simple captive hex bolt. | Agreed, ProMag Industries has improved upon its 2006 rework of the A.R.M.S. # 18 design (stock # PM081A). I looked at the photo gallery for the ProMag Industries scope mount in the GunsAmerica ad. I'm looking at my early style (split rail) A.R.M.S. # 18 scope mount. The new PM081A (split rail) scope mount has the dovetail key and wide pad screw for the barrel ring as mentioned above. Agreed, the ProMag Industries scope mount side bolt is not the same as the A.R.M.S. bolt as indicated above. If it were not for the different side bolt and lack of A.R.M.S. markings, one could be hard pressed to tell the difference between the original early style A.R.M.S. # 18 mount and the new ProMag Industries PM081A mount.
Last edited by Different; January 14th, 2012 at 12:13 PM.
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