AR15.Com Archives
 Robinson Arms XCR Generational Differences with visuals?
Beyond_Visual_Range  [Member]
3/20/2010 2:34:34 PM EST
Just wondering if anyone has some pictorial info to show the differences on the XCR changes? There's a nice thread on GSG5 with all the differences, and maybe someone could do one for XCR? mainly to see what are the changes with lower and internals.

Or may be there's an XCR forum that I have not been to that would have it?
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Afterwork_Ninja  [Team Member]
3/20/2010 3:06:59 PM EST
Try over here:

http://www.xcrforum.com/
XCRmonger  [Team Member]
3/20/2010 6:31:05 PM EST
It's a good idea. I'll snap some photos and make a collage or some sort on Monday.

I'd take pics of mine, but I have an older lower with a magpul trigger guard instead of the integral one.

*strokes XCR*
Zaphod  [Life Member]
3/24/2010 7:55:42 AM EST
Stop changing your avatar, dang it!
XCRmonger  [Team Member]
3/24/2010 2:21:12 PM EST
Make me!!

As requested.. sorry they aren't the best photos. I took these will my cell phone. I can't find my camera cable OR memory card. fudge...


Bolt Catch:

The one on the left is the new, one-piece bolt catch. The one on the right is the old style.

Bolts:

On the left is an old style bolt. These are ONLY in 5.56. No old style 6.8 or 7.62 bolts were made. The telltale sign is the firing pin. The new style bolts have a "top hat" back on them. The one on the right is the new style.

Gas Parts

The top barrel has an old style gas block. It can only be adjusted with a tool and does not have a special setting for shooting suppressed. See how the piston head is much shorter and fatter? This piston head will NOT work with a new style gas block.

You may be wondering why there are two pistons next to the new gas block. With the release of the mini, we shortened our op rod design. Now there are only "mini" length and "micro" (pistol) length op rods. For the standard uppers, we made a longer piston to go on the shorter op rod. They function exactly the same. The longer op rods just have a shorter piston head.

Gun Side Hinge



The old style gun side hinges had a sling loop on the side. Customers either loved or hated it. Because of customer demand, we changed over from a loop on the side to a hole drilled on the bottom to accommodate an M4 sling swivel.

Lowers
The new style lowers no longer say "XCR" on the right side. This is to make room for people doing their own SBRs and needing a surface to engrave, or for people who want to paint a design on that side of the magwell.

The new lowers also have an integral winterized trigger guard. We have been shipping them like this since last December.


Old Style -




The old lowers aren't bad. You can install a standard AR trigger guard. I built my XCR before the "pretty" lowers came out, so that's what I did with mine.

Safeties
The old safeties did not come ambidextrous as a standard option. That was something only available by request. They had longer, flatter arms and the arm and body were not one piece, but a body, arm, and screw.

The new style safeties - on the right in the photo - are all ambidextrous, and the left arm and safety body are one piece. You can remove the right-side safety arm if so desired. Some grips position the shooter's hand a little higher than other grips, and that ambidextrous arm can hit you in the knuckle. Our standard grips, ERGO grips, and MIADs seem to be just fine. If the old style safety isn't for you, but you don't want the ambidextrous safety, you can screw a new-style safety arm onto your old style safety, thusly cheating fate... or somesuch...

Trigger


The hammer, trigger and disconnect at the top are the old style. Underneath is the new enhanced trigger. It is still a 2 stage trigger, but is significantly lighter and cleaner. They have been VERY well-received by the XCR community.
- The springs are all standard.

I think that covers about everything. If you guys need anything else I'll see what I can do.

Afterwork_Ninja  [Team Member]
3/24/2010 2:55:30 PM EST
Thanks Terra.

Maybe it's just my computer, but I didn't see comparison pics of the old stock compared to the new scar style one.
Beyond_Visual_Range  [Member]
3/24/2010 4:13:12 PM EST
Thanks Terra, this is great info, much appreciate it.

I'd also second that next improvement should be on the stock, to make it more SCAR/ACR like, in that there's collapse and cheek weld adjustments. Maybe TAPCO can make something up.
Afterwork_Ninja  [Team Member]
3/24/2010 4:27:50 PM EST
Originally Posted By Beyond_Visual_Range:
Thanks Terra, this is great info, much appreciate it.

I'd also second that next improvement should be on the stock, to make it more SCAR/ACR like, in that there's collapse and cheek weld adjustments. Maybe TAPCO can make something up.


They have the prototype made. They won't show us pics yet though.
survivorman  [Team Member]
3/25/2010 2:15:56 AM EST
robarms or tapco?
Afterwork_Ninja  [Team Member]
3/25/2010 4:52:53 AM EST
Robarms.
themagikbullet  [Team Member]
3/25/2010 5:11:03 PM EST
Originally Posted By Afterwork_Ninja:
Thanks Terra.

Maybe it's just my computer, but I didn't see comparison pics of the old stock compared to the new scar style one.


or the ambi-mag release and 1/7 barrels
Zaphod  [Life Member]
3/27/2010 7:30:11 PM EST
So what would it cost to upgrade an older XCR with all these improvements?
aimpointed  [Member]
3/27/2010 11:56:11 PM EST
Originally Posted By Zaphod:
So what would it cost to upgrade an older XCR with all these improvements?


Couple of hundred bucks
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