ARMS 18 on M1A angular deviation

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The Bo

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Dear Highroad community,

Greetings from Germany

Since two weeks I am a proud owner of a Springfield M1A which I really like, although I did not shoot it till now.

Because I will use it as a Hunting rifle I ordered an ARMS 18 Mount (because it is so flat and through-see option is very nice) to install a Scope sooner or later, but till now I only have my EO tech 512 to try some testing on a range next weekend.

When I received the Mount I installed it according to the manual but I can´t find anything usefull on the net nor in the manual to troubleshoot my problem.

After installing the EO-Tech on the mount I realised that it is leaned towards to the left when you look through it. This is anyhow little bit disturbing. And this is not a problem with the EO-Tech, it is clearly the mount that has this angular offset. The EO-Tech is just amplifying this problem due to its height. On the mount alone you would´nt even notice this problem.

I read much about that SA receivers are not always in spec and there could be trouble when Installing any mounts on the M1A. Some even write that you need to modify the mount to fit it on the receiver but I have natural rejection to modify finished parts (i.e. this ARMS 18 mount).

Maybe some of you guys stood allready on this particular point and might give me a helping hand on this.

Or is this just "normal"?

If there is some work to do I will do it(Even if I have to file on that mount). I got no problem with that, but here in germany spareparts are expensive. And I just want to think twice about every step before I just destroy something.

If there is anything to file, maybe someone of you could post a pic on which place this had to be done.

So many thanks in advance for your help.

Sorry for my bad english

Bo
 

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I've dealt with this on several non-military M-14 style receivers. Once the scope mount has been proven (and quality ones nearly always are) often times the offending high spot on the receiver is as easily addressed by careful shimming of the corresponding low points rather than risk removing too much metal from the receiver.
 
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