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April 21, 2018, 11:01:54 PM
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Author Topic: Lets See If I Can Break It (My MDR)  (Read 403 times)
CabbitOne
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« on: April 16, 2018, 09:41:56 PM »

I decided I'd start a topic to document my (hopefully pleasant) experience with the MDR. I'll keep updating this original post as I add information and add a simple reply of "updated" and answer any questions I catch. I'm going to try to be as thorough as possible, documenting everything I can think of, and adding pictures. I'm also going to try to remember to take higher resolution photos of anything significant. So here it goes:

My MDR should be arriving at my FFL on Wednesday(04/18/18) and I plan on picking up up Friday (04/20/18) with a range trip the following day. Initial outing will just be a break-in and to try to get a feel for the rifle. I'll have three magazines with me and be shooting new Lake City M80 Ball. Assuming it doesn't fall to pieces on me, I'll follow up with an accuracy report in the subsequent weeks. For the initial trip, the MDR will only be sporting an Aimpoint Micro T-1 that I'm stealing from a different gun. I'll find...something... to run for a little more precise work.

(04/16/18) I loaded up two magazines in preparation for my first outing with the MDR. Both are unused and were sealed in their package prior to today. One is a 25 round Lancer magazine in Translucent Dark Earth. The other is an old generation 20 round non-windowed PMAG in black. Both were fully loaded to allow the springs to set. PMAG date code is 06/2010. LANCER date code is 10/2016.


(04/21/18) Picked up the rifle yesterday but unfortunately I didn't get to play around with it till very late at night. The packaging in nice, though I can see sending a disassembled rifle being an issue for a good chunk of the market. Along that line, stupid me forgot I needed an 80 in/lb to put it together. So that + horrible weather has delayed my first outing.


Went ahead and loaded the factory 20 round PMAG date code 02/17 yesterday.



First impressions (external and controls). It's a little ass heavy. Not bad, but it's noticeable. Not an issue at all once it's in the shoulder. Reminded me the first time I picked up a Tavor SAR after shooting AUGs forever. The foregrip, seems fragile which makes sense since people seem to be breaking them. The more I think about it, the more disappointed I am with their execution of the top rail. By making it part of the receiver it canít be replaced. It canít be replaced and is very short. The extension would normally be the hand guard but Iíd hesitate running anything precise on the factory hand guard. Furthermore they did away with the factory integral front sight(not a big deal) but replaced it with a single rail slot. Iím sorry, but I feel as though it either should be 2-3 slots to accommodate irons or a variety of red dot mounts OR should be gone entirely allowing aftermarket handguard rails to fit against the recover. It almost seems like they tried to go halfway in two different directions. All of this to add that you cannot (easily) access the gas regulator without an aftermarket tool.

While Iím on it about the handgaurd, the attachment method isnít how I would have done it. Not saying itís wrong, but the single crossbolt and 30 in/lb torqued mlok pads seem like an odd choice.

The trigger, at least on my example, is quite serviceable. No, its not a Shooting Sight or Geissele, but I'd take this any day over my gen 1 SAR trigger. Very curious to see how it changes with use. The barrel lock control could us much more of a positive indexing. Not quite mush, but you really have to try to feel where it aligns. Not a huge fan of the position/type of selector switch, hope it will be addressed with aftermarket options. I'm not a fan of the charging handles. They feel like an afterthought. They, at least to me, don't follow the lines of the rifle and look almost as though they should be hinging in a different area. They're the wrong shape for how the rifle operates. Along those lines, personal preference is I wish it had a forward assist or a way to manually move the bolt forward. The hinge down to retract isn't a positive or negative to me, but it might help those who fear knocking the rifle out of battery.



The magazine release on my rifle is pretty heavy. I wouldn't necessarily call it stiff, more it feels weighty to me (heavy spring? long fulcrum?). I've been working the right side button and it seems to be improving, or maybe my finger is just getting stronger. lol. Right now I'm at 500 reps. Mine didn't seem as bad as some have reported where they had to use two thumbs to maybe compress it. I could do it with my trigger finger, just wasn't fun/easy. Haven't had time to mess around with the left side or the rear.

Once I pick up a 80 in/lb wrench, I plan to run the charging handle 100-200 times before I actually take the gun to the range.

Putting the rifle together, before I had the hand guard on, made me lust over the idea of an MDR-C in .300 BLK.

I'll follow up later/tomorrow/soon with my impression of the internals.


*bonus 04/21/18 update* Just tried the gen 1 PMAG in it. Locked up fine. Was able to remove it fine. Left the rifle alone for a bit. Just picked it up and noticed all the magazine releases are dead. As in they just flop loosely around. Oh and of course, nothing will lock into the magwell. I'll post again when/if I find a solution.
Ran the CH a few times letting it slam home, and suddenly the problem righted itself. Tried the PMAG that came with the rifle and it produced the same issue. Noticed the... arm? (the section on the left side of the rifle that moves outward and inward to retain the magazine) is sticking in the open position. Again the CH slamming fixed it. Tried and it happened again, this time arm(?) returned to normal but I still have dead magazine releases and no magazine will even attempt to lock into the rifle.


If I forgot to detail anything or you want to know something, please ask!


* Magazines.JPG (1463.44 KB, 4032x3024 - viewed 37 times.)
« Last Edit: Today at 11:00:37 PM by CabbitOne » Logged
Blackandwhiteknight
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« Reply #1 on: April 16, 2018, 11:01:30 PM »

Congratulations on getting your rifle.  I'm 550 rounds into my MDR experience and I can't keep from shooting it any time I get.  I let my buddy run a few mags through it and he says he wants one now. Cheesy  Good choice on the LC M80.  I've had no issues running it through the MDR, it seems to like it.  The Lancer mag would give me pause though.  Hopefully that was a good batch.  Have fun shooting. Interested to see how it goes.
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newguy2k3
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« Reply #2 on: April 17, 2018, 08:57:54 AM »

Very curious to hear if the gen 1 pmag works in yours. They fell out of mine in stock form.
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CabbitOne
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« Reply #3 on: Today at 09:06:57 PM »

*updated*


* IMG_2993.JPG (1807.47 KB, 4032x3024 - viewed 3 times.)

* IMG_2994.JPG (1907.76 KB, 4032x3024 - viewed 2 times.)

* IMG_2995.JPG (1758.71 KB, 4032x3024 - viewed 2 times.)

* IMG_2996.JPG (1736.14 KB, 4032x3024 - viewed 6 times.)
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