Newest Rig Finally Done! (UPDATE: Small Issue Found With This Configuration Pg. 3)

shotzee said:
Range report and review of toys!

Angled foregrip, BAD lever, etc!

I demand it!
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Range report coming.... As far as the furniture goes, Im familiar with all of it. I like the AVG the theory works for me, I feel like I have alot more control and the grip feels more dominant. (If that makes sense) The Bad Lever is smooth and simply serves it's purpose, in other words it's very efficient.

The UBR: this is my first build with it. I have tried every other Magpul stock and this one gives you a little bit of every stock they make. I love it, It feels solid and it balances nicely. I can't wait to field it.

The EOTech x3 Magnafier: I can't believe I had an HWS without it. It makes my sight 10x better. It is my favorite addition thus far. My sight and optic setup in general all work together. I can go from close range to mid range at the press of a button, and can go from Optics to BUIS at the press of two buttons. This step-up kicks-ass and im diggin' it.



OZZ said:
Nice! How does that plastic Magpul front sight hold up under fire, does it get melty? I dig the ATRS lower, I got one of the originals too.
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The Magpul sight is solid and tough, it does its job and has not failed me yet. It does not get "soft" after continued use. I really like the weight savings as well as the quick deploy button.
 
HMMMMMMMMMMM??

I Don't Know.... There's something missing........

:)


Very nice. I have my ATRS lower sitting here as well. This should get me motivated to get on it and finish it up.

Great Job.

Cheers:)
 
Update

OK so I have to come clean, mating this upper with this lower was not just a slap together done deal thing. There was some small modifications that needed to be done in order to get the upper and lower to interact properly together.

On the bottom of the these MRP uppers (where it meets the lower) about an inch and half back from the forward take down pin were these small "rectangular bumps" a couple thou raised beyond the surface. They interfered when the two made contact and it was impossible to make a good seal. (enough to close the take down pins)

The reason I didn't explain this in my original post was because I was waiting to hear back from LMT first. I wanted to know if this was normal or if maby I just received one that was machined a little out of spec. Well, I herd back from a very helpful, friendly gentlemen from LMT today. His response was...

the “speed bumps” found on LMT CQB and Standard M4 uppers are there on purpose and are designed to provide a no wobble/no noise when mated to a Mil-Spec lower. These being Colt, FN, Saber, or LMT. That is per our DoD contracts. However when the “speed bumps” are used in conjunction with commercial or non Mil-Spec lowers the tolerance stack ups can prevent proper assembly. Now this does not mean there is anything wrong with the lower or the upper, it just means because of differing manufacturing processes they are not compatible with each other. Because of differing tolerances with commercial spec and Mil-Spec lowers, I cannot guarantee without a doubt that our uppers will fit every lower.
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So basically what happened here is that ATRS machines there lowers to incredibly tight tolerances, alot better then the mil-spec standards, hence the impossibly tight fit.

So anyway, what I did to fix the problem was simply sand down these "speed bumps" so that they were flush with the bottom of the receiver. Additionally I also had to ream a tiny bit off the inside of the rear take down pin lug. I used a drill bit and it took about 2 seconds and one pass. When I got everything back together it fit better then perfect. She's super tight with no slop and it cosmetically looks perfect you can't even tell.

So why am I telling you this? I feel I owe it to my fellow gun nutz. I wanted to let you know that this upper may require some minor modification in order to get it to bolt up to certain lowers. In the end I would do it again, and actually I plan on it. Next build will be another ATRS lower and the rifle length MRP upper. The point being some may not feel comfortable doing these types of modifications and so it's important to let the public know what I have found.

I wanna give a big thanks to Scott @ Questar and aswell a big thanks to the LMT rep. These guys have bent over back wards for me and as a result have gained a customer for life.
 
Give the MRP some time, mine was extremely tight when new, after a few thousand rounds its still tight, but its a nice fit and easy to pop apart.
 
angryeyebrows said:
I would have hacked on that lower before I touched the MRP! Hey it's your rifle...
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wicked_police said:
Same here....
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WOW really I'm confused. So you both would have sanded an indent into the lower making the lines of the lower un-even and looking terrible. Rather then just sanding the speed bumps flush with the receiver? The lines on my receiver are straight and look factory. After I was done sanding I took some matte black touch up paint and just covered the shiny spots, you can't even tell. (you've seen the pictures) IF you hacked the lower it would have been really noticeable even when assembled. My previous upper (stag) was smooth and did not have these speed bumps, so I figured better to make it the same rather then touch the lower...

Please explain what you guys meant? :)
 
LMT sounds full of #### to me, when you leave extra height 'speed bumps' to take up slack you are then not making your upper milspec, right?

You should have tried the upper with other lowers to see and vice versa to see who was out of 'milspec'
 
50calshooter said:
WOW really I'm confused. So you both would have sanded an indent into the lower making the lines of the lower un-even and looking terrible. Rather then just sanding the speed bumps flush with the receiver? The lines on my receiver are straight and look factory. After I was done sanding I took some matte black touch up paint and just covered the shiny spots, you can't even tell. (you've seen the pictures) IF you hacked the lower it would have been really noticeable even when assembled. My previous upper (stag) was smooth and did not have these speed bumps, so I figured better to make it the same rather then touch the lower...

Please explain what you guys meant? :)
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All I'm saying is I would have found some other alternative that didn't involve potentially ruining the resale value of a very expensive upper. As much as I like some rifles, only a few ever stay in the gun locker. My solution would have been to s**t can the ATRS lower and simply buy an LMT.

All that being said, I am no stranger to modifying things in order to have them function correctly. I ground some of my LaRue upper receiver in order to make a rail system fit...but that was only a $250 dollar upper and I knew I'd be keeping it.

Remember, this is just my opinion. In the end it's your rifle and it don't really matter what I think. ;)

Oh and it is a great looking carbine by the way!
 
angryeyebrows said:
All I'm saying is I would have found some other alternative that didn't involve potentially ruining the resale value of a very expensive upper. As much as I like some rifles, only a few ever stay in the gun locker. My solution would have been to s**t can the ATRS lower and simply buy an LMT.

All that being said, I am no stranger to modifying things in order to have them function correctly. I ground some of my LaRue upper receiver in order to make a rail system fit...but that was only a $250 dollar upper and I knew I'd be keeping it.

Remember, this is just my opinion. In the end it's your rifle and it don't really matter what I think. ;)

Oh and it is a great looking carbine by the way!
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OK, yeah I see what you mean. It's my hope that this rifle stay with me forever. Unfortunately things always change so it's hard to follow through with that. In any event though I would say that if the time came to sell it, I think it would have to go as a complete rifle. :)
 
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