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Springfield Armory 3rd & 4th Gen scope mount problems.

This is a discussion on Springfield Armory 3rd & 4th Gen scope mount problems. within the The M14 forums, part of the M14 M1A Forum category; Hello. I have Gen 3 mount on M1A Loaded. I was struggling with it for 1 year. I change ammo,loads, scope,using Loctite etc. Group was ...


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Old May 20th, 2018, 10:48 PM   #46
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Hello.
I have Gen 3 mount on M1A Loaded. I was struggling with it for 1 year. I change ammo,loads, scope,using Loctite etc. Group was wandering on target. But I started to think about vintage mount on M14. And what I did , just remove rear screw and mounting . I've completly throw it away, I left only main side knob.
Miracle ! Groups 1,5-2 moa, holding zero, no wandering
In my case ,mount can touch receiver only in one place - side.

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Old May 21st, 2018, 07:08 PM   #47
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I have the Gen 4 aluminum and its constantly needing adjustment, cleaned all contact points with alcohol and installed with Blue. I never had a scope mount you have to hammer into place to tighten. I get the forming to your receiver installation, but this is a pain in the ass. The directions are lacking and the cam alignment once understood is questionable. I think SAI dropped the ball, I tore my Socom 16 down today for a complete cleaning after r range day. I was pretty surprised how rough the finish work on the bolt was. The op rod wasn't much better with small burs on it. I ended up wet sanding and polishing everything that was metal to metal moving parts. I was disappointed with what I saw and thought maybe QC maybe on a downward spiral. The mount though I can't recommend, I have 9 different rifles and have never had to load up a range bag with a pair of adjustable channel locks to retighten a scope mount.

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Old May 22nd, 2018, 06:33 AM   #48
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I have a New Gen 4 Aluminum mount & its working great , my only issue was not the Mount , I forgot to put Loctite on the mounts screws . It still took two range trips to loosen up slightly & it won't do that again .

I like it .

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Old May 22nd, 2018, 06:42 AM   #49
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I think I'll stick with the brand I'm using; built with quality, solid and reliable.

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Old May 22nd, 2018, 11:18 AM   #50
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ntech,

Welcome to the Forum!

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Old May 22nd, 2018, 05:02 PM   #51
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4th gen Q

I recently acquired a SAI gen 4 aluminum mount, used. At install I noticed a small misalignment between the hole in the stripper clip replacing mount base and the Fed Ord receiver roll pin hole. After a bit of snarling and gnashing of teeth I got the pin installed. I could not determine which hole was out of tolerance, so I just filed a small chamfer on the roll pin and drove it home. (yep, I know, brute force and ignorance will not be denied) Roll pins are a bit forgiving at times.

One range session later, (45 rounds) the scope seems to have settled in and the mount is still tight. The battle to get that roll pin in still bothers me. I see hand reaming with a small taper reamer and installing a taper pin as a better fix, ridged and stable.

Am I watching a tempest in a teacup or should I go the taper pin route?

Any and all suggestions and/or explanations are gently solicited.

Thanks, Paul in Venice

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Old May 22nd, 2018, 06:19 PM   #52
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I've only heard of countless hours of frustration with springfield mounts. Your better off just getting a sadlak / bassett / ARMS mount and be done with it. Whatever money you think your saving by going the springfield route will be quickly eaten up in time spent messing round with the mount trying to get it right. Buy once cry once.

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Old May 22nd, 2018, 07:19 PM   #53
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You're better off getting a Redneck Yankee mount.
no cryin' required

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Old May 22nd, 2018, 07:21 PM   #54
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The Gen 4 mount wasn't cheap wasn't chasing a dime to save a dollar. Buy once cry once doesn't appy

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Old May 22nd, 2018, 09:25 PM   #55
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Quote:
Originally Posted by redcaddy51 View Post
I recently acquired a SAI gen 4 aluminum mount, used. At install I noticed a small misalignment between the hole in the stripper clip replacing mount base and the Fed Ord receiver roll pin hole. After a bit of snarling and gnashing of teeth I got the pin installed. I could not determine which hole was out of tolerance, so I just filed a small chamfer on the roll pin and drove it home. (yep, I know, brute force and ignorance will not be denied) Roll pins are a bit forgiving at times.

One range session later, (45 rounds) the scope seems to have settled in and the mount is still tight. The battle to get that roll pin in still bothers me. I see hand reaming with a small taper reamer and installing a taper pin as a better fix, ridged and stable.

Am I watching a tempest in a teacup or should I go the taper pin route?

Any and all suggestions and/or explanations are gently solicited.

Thanks, Paul in Venice
I think you better forget the tapered pin reamer idea, will be a huge headache. If you attempt, carbide will be in order.
My preference is for the Brookfield mount, never had a problem installing or it drifting or coming loose.

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Old May 23rd, 2018, 03:12 AM   #56
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I’ve never regretted spending money on quality optics, rings or mounts. I have cussed at and once launcheda Gen 3 Springer mount into low earth orbit. Cheap mounts aren’t worth my time or effort.

OP,

I applaud you tenacity at making this work for your needs and budget.

Thanks from SRA
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Old May 23rd, 2018, 08:13 AM   #57
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Way back in 2000 I purchased a loaded M1A and also a gen 3 scope mount. It never mounted solidly or repeatedly until I took it to Gus Fisher.

Gus took a look, stripped the rifle down to the barreled receiver and put it on his anvil. Using what I recall was a well worn brass mallet he proceeded to pound the mount into the side of the receiver. This deformed the aligning ridges to match perfectly with the receiver and created a rock solid mount!

Looked scary but Gas has the touch. Not for the faint of heart. But, he said that is how it is done with that type of mount.

Gus also told me that the mount would now only work on this receiver. The vertical aligning ridge on the mount is clearly 'reformed' but there is absolutely no deforming or even a mark on the receiver itself.

I have not had it out for a long while but will try to get it to the range soon to see if it still holds a good zero.

Rich

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Old August 5th, 2018, 10:27 PM   #58
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On saturday I've shot few rounds on 300m .
Scope was set to zero on 100m previously. Added 20 clicks, checked impact (red), and tried elaboration I was using. Result is pretty nice, 15 cm wide, 10 cm height (assuming that lowest one is flyer).It gives about 2 MOA. I have to work on trigger,horizontal stringing is visible.
So, 3 Gen mount isn't that bad. In my case it holds zero using just one main side screw.

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Old August 6th, 2018, 03:33 AM   #59
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Early scope mount?

I was told this is an early M14 mount and would love to hear your thoughts on it. Thanks for any info you can offer on it. I keep digging and find more and more odd stuff.
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File Type: jpg DSCN3075.JPG (4.72 MB, 135 views)

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Old August 6th, 2018, 03:41 AM   #60
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Yes indeed, a great find.
Very early M14 scope mount.
I will post photos of mine just like it when I get a chance.


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Last edited by nf1e; August 6th, 2018 at 05:48 AM.
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