Robarms XCR FAQ post

[skypilot]

Alright I see what you mean; I'll need something to cover up the opening in the stock since it's raised, but I get a much better cheek weld now. Thanks!

You're welcome, glad it helped. Just to cover all bases, the cheekpiece adjusts up also. Disregard otherwise and enjoy.

 

[vultr]

I dont have any issues with LOP ..I just find the stock to be "thin" and uncomfortable. Was looking at a beefier stock like a magpul ctr perhaps.

Mdt skeleton lite ftw. Lighter than the FAST and no play, all the adjustment of the of PRS (but billet, not plastic). It's even Canadian made to boot.

 

[Astute Observer]

Mdt skeleton lite ftw. Lighter weight than the fast, no play, all the adjustment of the of prs, and Canadian made to boot.

I've been thinking about this - how did you get that attached? Will the Dlask stock adapter work? Or do you need an MDT adaptor, plus the Dlask adaptor?

 

[vultr]

Nope, just pulled the FAST, bolted on the dlask using the hex bolts that came with the rifle, and slid in the baby buffer tube that comes with the stock. Maybe a ten minute install total.

 

[Astute Observer]

...Maybe a ten minute install total.

Awesome thanks a ton! I'm totally getting an MDT stock now!

 

[vultr]

Sorry, it had been a while since I put my rifle together. I had a look at my setup last night just to jog my memory. If you go with the skeleton v4, you don't need any adapter to direct connect, with the skeleton lite you need the adapter (about 40 bucks I think).

It can be found here:

https://mdttac.ca/fixed-stock-adapter-for-lss-v2.html
It can also be found from bull's eye London, a forum sponsor.
I've got both, and I mixed them up. Sorry!

 

[Brianma65]

So,I just bought a XCR-L keymod (used). It's chambered in 7.69.
What do I need to change it out to .223? And what the diff between type1 and type 2 bolt?

 

[xdmer]

5.56 Barrel, Bolt and case deflector. Type 1 bolt is an old generation, made for a different receiver and bolt design.

All explained here in parts identification

So,I just bought a XCR-L keymod (used). It's chambered in 7.69.
What do I need to change it out to .223? And what the diff between type1 and type 2 bolt?

 

[Brianma65]

5.56 Barrel, Bolt and case deflector. Type 1 bolt is an old generation, made for a different receiver and bolt design.

All explained here in parts identification

Thanks,just so happens wolverine is showing out of stock on the type 2,

Sorry just looked again,looks like I'm in luck,type 2 is in stock.
Why is the newer type 2 cheaper?

 

[Astute Observer]

Why is the newer type 2 cheaper?

Probably because there are more Type 2 in circulation. The Type 1s are for older rifles, and fewer out there in circulation, and a finite demand for Type 1 bolts, they probably stopped manufacturing them

 

[Brianma65]

So I got a complete bolt, barrel and shell deflecter.
Should be good to go?

There'll be a cheap 7.69 for sale on the EE soon
Any idea what a used one will go for?

 

[Klemmy31]

So I got a complete bolt, barrel and shell deflecter.
Should be good to go?

There'll be a cheap 7.69 for sale on the EE soon
Any idea what a used one will go for?

200$.......to me only!!!

 

[Grove]

200$.......to me only!!!

Haha we could only wish.

What profile of barrel do you have? Taking a good guess "Light Contour" since its from a keymod model.

I got my eyes on the watch for a heavy x39 barrel.

 

[Brianma65]

Haha we could only wish.

What profile of barrel do you have? Taking a good guess "Light Contour" since its from a keymod model.

I got my eyes on the watch for a heavy x39 barrel.

I'm not sure. I took it on trade and planned on converting to .223, right from the get go Still waiting on the gun yet, I'll shoot a PM off , to the guy. See what it is.

 

[SteelCap]

Has anyone figured a way to prevent the barrel screw from walking out?

 

[Brianma65]

Has anyone figured a way to prevent the barrel screw from walking out?

I never had that prob, shouldn't the heli screw prevent that.

Or maybe use some blue locktite?

 

[SteelCap]

I found out it walked out last night and this following experiencing some failure to feed issues during a match. Where can I find this heli coil?

 

[Brianma65]

I found out it walked out last night and this following experiencing some failure to feed issues during a match. Where can I find this heli coil?

It was already in the keymod, that I used to own.
But ,if yours doesn't have one, you can get one put in, probably have to use a smaller bolt though.
Or you can have the threads made bigger and use a bigger screw.
Any machinest should be able to fix you up.

I know this works, because I snapped my screw off,and had to drill out the screw, then retread it.

 

[SteelCap]

I will look into it. Thanks.

 

[Chillingsworth]

After going to the range the other week, I was wondering if anyone has tried using a different brass deflector than their installed caliber. Would using a deflector for a larger cartridge force the casing to actually fly towards 1 o' clock? My .223 prefers to fly at 2:30 and on to other shooters' tables, and while it's to be expected on a firing line, I figured throwing $8 to have my steel/brass fly somewhere I can see would be a nice convenience. I figured I could try screwing on a 7.62, 6.8 or even .308 on the back of the ejector and see if that would make a difference. Before I try experimenting, has anyone else tried this? If it makes any difference, I have a pre-keymod quad rail upper.