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4th Generation Springfield M1A Loaded Scope Mount

This is a discussion on 4th Generation Springfield M1A Loaded Scope Mount within the Optics forums, part of the Gun Forum category; I was looking at the Sadlak scope mount but I was hoping to save some money. I must say the fit and finish of the ...


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Old January 11th, 2017, 09:05 AM   #1
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4th Generation Springfield M1A Loaded Scope Mount

I was looking at the Sadlak scope mount but I was hoping to save some money.
I must say the fit and finish of the Springfield 4th gen. mount is outstanding. The instructions said I may have to use a triangular file to fit and I did need to add a bit of clearance but it was not a big deal.
It seems to be a super tight lock-up with a very low rail with plenty of room for ejection.
I will mount a scope on it and show some pics.
+1 for me.

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Old January 11th, 2017, 09:13 AM   #2
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Pay attention to the thumb screws they tend to loosen up while shooting... I took mine off and got a basset...

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Old January 11th, 2017, 12:37 PM   #3
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Quote:
Originally Posted by danthman114 View Post
Pay attention to the thumb screws they tend to loosen up while shooting... I took mine off and got a basset...
Will do, they sure are big enough.
I like that I can still use the iron sites.
I will probably mount an old Leopold 4X I have had for years.
Here are some pics so far.
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Old January 11th, 2017, 12:41 PM   #4
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Does the rear screw just push against the receiver?

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Old January 11th, 2017, 01:01 PM   #5
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Originally Posted by Douglas Haig View Post
Does the rear screw just push against the receiver?
No, there is an adjustable spacer that you screw in to the desired tension against the receiver then you lock down the nut to retain it.
I suppose anything could loosen up but that goes with anything mechanical. I would think blue locktite would be OK.
I would refer to a more knowing source than yours truly though. :)

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Old January 12th, 2017, 05:14 PM   #6
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Quote:
Originally Posted by janderso57 View Post
No, there is an adjustable spacer that you screw in to the desired tension against the receiver then you lock down the nut to retain it.
I suppose anything could loosen up but that goes with anything mechanical. I would think blue locktite would be OK.
I would refer to a more knowing source than yours truly though. :)
This is a pic of the rear mount. A picture is so much more definitive.
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Old January 12th, 2017, 05:29 PM   #7
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I purchased and just installed a Basset as well. Easy on/off and a great deal for the $.

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Old January 13th, 2017, 05:07 AM   #8
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Hello, no problems with the ejection of the cases?
They do not tap the rifle scope (google translate)
Thank you for your reply

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Old January 13th, 2017, 11:15 AM   #9
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I have a Smith on my SuperMatch and a ARMS #18 on my Scout so I have no experience with the factory SA mount.
But on screws that might possibly loosen like your thumb screws, after I get them tightened up, I dab a toothpick in paint (can be nail polish, testers model paint, etc.) and put a small witness mark on the screw head and another on the part right next to it. That way I can tell at a glance if the screw/s have loosened/backed out.
Let us know how the mount holds up after you get her up and running.

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Old January 13th, 2017, 12:04 PM   #10
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Quote:
Originally Posted by janderso57 View Post
No, there is an adjustable spacer that you screw in to the desired tension against the receiver then you lock down the nut to retain it.
I suppose anything could loosen up but that goes with anything mechanical. I would think blue locktite would be OK.
I would refer to a more knowing source than yours truly though. :)
My Basset mount screw will loosen over time too; blue locktite takes care of the problem, no worries.

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Old January 16th, 2017, 09:05 AM   #11
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Range Report With Scope Mounted

So far so good. I mounted a Vortex Crossfire II, 6X24X50 and boy do I like this scope. Crystal clear, easy to adjust.
I did not have it bore scoped so I used the iron sites to see I was way off.
I went through the motions of sighting in the scope and finally got pretty close at 50 yds then moved out to 100 yards.
The pictures I am including will show some decent results. I am still working up a load for this rifle but I may be close with 44 gr. of IMR4064 with a Hornadt GMAX 150 bullet. I am using new Hornady brass not Winchester as marked. CCI lg primers. OAL is 2.775.
The Springfield 4th Generation Scope mount was awesome. It stayed good and tight through 50 rounds!
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Old January 16th, 2017, 09:36 AM   #12
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They are decent scope mounts. If you start having any problems get a bassett mount.

:)

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Old January 16th, 2017, 02:08 PM   #13
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Originally Posted by Killashrub View Post
They are decent scope mounts. If you start having any problems get a bassett mount.

:)
Oh, I am sold on Bassett. They are a bit more than I wanted to spend on the initial set-up. They are lean and low. Can you still see the iron sites with a Bassett?
I was able to use my sites when setting up the scope with the Springfield Gen. 4 mount.

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Old January 16th, 2017, 02:24 PM   #14
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Quote:
Originally Posted by janderso57 View Post
Oh, I am sold on Bassett. They are a bit more than I wanted to spend on the initial set-up. They are lean and low. Can you still see the iron sites with a Bassett?
I was able to use my sites when setting up the scope with the Springfield Gen. 4 mount.
Only if you get the high mount set-up. Low mount is too low to use iron sights. Check out their website www.bassetmachine.com. -Lloyd

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