Took an AR in trade... how'd I do?

5

540EdgeFlyer

New member
A good friend, and I had done some horsetrading on some other non gun related stuff, and he ended up needing to give me $650 boot. I told him I'd take one of his ARs in lieu of the cash. he said OK.. I said, OK, and now I'm the proud owner of my first AR15.

The lower is a Moore's Machine Co. which I've never heard of before, but seems to be a nice quality USA made piece. From what I can tell it's a Spike's upper. If I'm incorrect about this please point it out, as I'm obviously no expert.

It's got an inexpensive Bushnell scope, and it came with a hard case. Seems to be pretty clean, but I've not had the chance to shoot it yet.

So How'd I do? Any info would be appreciated, as I said, this is my first AR.:)

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Nevermind the AR, I love that table :D. That seems like a good deal if you ask me. have fun shooting it
 
Looks like you'll be needing to move that scope back so it's mounted 100% on the receiver. Can't imagine why it's so far forward-maybe just stuck on there for looks.
 
The AR looks pretty good, but the scope is not really mounted the way it should be. On a non monolithic upper its not good to "bridge" the gap between the hand guard rail and the receiver rail. In most cases you can take the forward scope ring and mount it on the most forward slot on the receiver and then place the rear scope ring somewhere behind the adjustment turrets it makes for a much more rigid setup.
 
Thanks Mo84, I've got a thing for clocks:) .... and all things mechanical LOL.

Thanks for the tip Mobuck. I never noticed that, and even if I had, probably wouldnt have given it any thought, but what you're saying makes sense. I'm planning on changing the scope out anyway, but I'll adjust this one in the meantime.
 
Mobuck, Palmetto,

You just gave me something to think about ( could be bad news for my wallet ).

I have a heavy barrel DPMS Panther Bull and I put a scope on it.

The rifle shot really good but I had a real problem with getting decent eye relief with the scope. The scope is a Nikon Buckmasters 4-14X40.

Rather than look for a longer stock or an extension tube for the stock, a friend of mine gave me a 4 rail forearm.

I did not install it my self and took it to my gunsmith and had it installed so I could move the scope forward and get more relief.

So my scope DOES bridge the receiver and the rail.

I HAVE noticed my groups have opened and I thought it was an ammo problem or the fact I was looking for better performance and have become more critical.

Can either of you point me to your reasoning for not bridging rails?

My son has the rifle now and as soon as I get it back, I am going to move the scope back onto the receiver and test it.

I am curious why the smith would not have cautioned me about doing that.

Also, that still leaves me with a problem of poor cheek weld/eye relief with the scope on the receiver.

I have the scope as far forward as I can get it in the rings.

Any ideas what to do now?

Geetarman:D
 
if it is indeed a spikes upper then the upper half alone should be worth at least $650. I also have never heard of MMC but I would say you made out like a bandit
 
geetarman said:
So my scope DOES bridge the receiver and the rail.

I HAVE noticed my groups have opened and I thought it was an ammo problem or the fact I was looking for better performance and have become more critical.

Can either of you point me to your reasoning for not bridging rails?
Click to expand...

It very possible for a floated hand guard to have some movement, it's not much, but just a few thousandth well change your POI if the forward ring is mounted on the hand guard. This is one reason monolithic uppers are available.

I've used a raiser to allow me to mount the front ring further forward like this pic.

paracord01.jpg
 
Madcrate,

I have ordered a GGG extended base from Midway and will remount the scope when it gets here. I won't have it before next week.

In the meantime, I am going to move the scope as far forward as I can in the rings and remount the whole thing as far forward as I can on the upper.

The only other thing I could do is replace the Magpul stock to get me away from the end of the scope to get some eye relief. The rifle came with the Magpul adjustable stock and there is no more adjustment left.

I don't know if there are extender tubes for that stock or not. I expect there are, but I have not looked into it.

My whole career in aerospace was dimensional metrology. . .I should have picked up on the problems associated with the setup a long time ago.

Thanks for the feedback.

Geetarman:D
 
Geetarman I can't believe a gunsmith mounted your scope like that. There's a difference when people mounts optics on rifles as props and when you mount them to actualy use them the way they should be. I am thinking your gunsmith may have been the Propmaster at Wal-Marts sporting goods dept.....lol
 
Palmetto,

He did not mount the scope. I did that. However, I told him why I wanted the quad rail and what I was going to do. To be fair, he does a whole lot of pistol shooting and not so much with rifles. I am somewhat disturbed that none of us saw a problem.

But the problem is here. I have the Magpul PRS stock on the gun and to use the scope, the stock needs to be longer or the scope must go forward.

What would be your suggestion? Do you think the extended base is the way to go? I can imagine having to replace the rings with low base rings to get the scope back down.

Any advice would be appreciated.

Geetarman:D
 
So my scope DOES bridge the receiver and the rail.
Click to expand...

You might want to look into getting a cantilever mount, like the Burris PEPR. It lets you mount the scope further forward without attaching the mount to to the handguard rail.

I can't imagine a scope that would have so much eye relief that you couldn't adjust the stock back far enough to get a good sight picture. Most scopes have an eye relief of less than 5 inches (many are less than 4). Even fully collapsed, the distance from the ocualr to my eye on my M-223 is appropriate (I'm using the PEPR mount). Here's a pic of one of my AR-15's with the scope mounted:

nikon_scope_mounted.jpg
 
JSimmons,

Thanks for the reply. I really do not have enough eye relief. I am 6'4" and really have to wrap myself around the gun.

To be clear, I CAN get enough eye relief to shoot, but I have to work at it.

All my other rifles, I can mount the rifle and have the eye relief pretty much in full bloom. That is what I am looking for with this rifle.

The only way I can do that is move the scope forward. The Magpul PRS really does NOT have a lot of adjustment fore and aft. Not nearly what I would have expected from a butt stock that costs so much. I am guessing less than an inch and I am around two inches short of where I need to be. I have a GGG GS-1 extended rail on order that should allow me to re-position the scope to the upper and allow me to move the scope forward to where it needs to be.

My son shot the rifle this past weekend and had no issues with it. I am not sure what kind of groups they were getting, but I am thinking the gun should cloverleaf at 100 yards with the right ammo.

It is a work in progress.

I sent an email to Magpul tech support this morning and am curious what they have to say.

I was pretty happy when I first bought the rifle. I had the Aimpoint and 3X magnifier co-witnessed with the folding front sight and BUIS.

I thought the rifle should get better with a scope and so far it has not.

I am searching for the reason. It may take a little time but I will get there.

Thanks for the response.

Geetarman:D
 
Hmmm. I assume that you've run the stock all the way out, and that you're achieving cheek weld on the stock (as opposed to the buffer tube). If I do that, I have to move my scope back to get a full sight picture because that puts my eye about eight inches away from the scope (when the scope is mounted as shown in the picture above).

It looks like your scope mounting location is in pretty much the same place with relation to the position of the eyepiece. What scope is it?

Your height shouldn't have anything to do with anything other than the reach from shoulder to trigger, and this can be addressed by moving the stock back. The pictures you posted show the stock fully up, and fully back.

BTW, I have the Magpul CTR stock. I'm not sure why your stock would have any less adjustment, given that it's typically the buffer tube that dicatates how far back the stock can go.

have you considered changing over to a fixed stock?
 
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