Robinson Xcr Rifles?

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The XCR's piston, carrier and bolt look VERY AKish to me. This is pretty neat.

Does that massive weight in motion hurt accuracy? I've yet to read any accuracy reports on these guys. Can they shoot 1" groups at 100 yards with a heavy barrel + bipod using match ammo? Is it possible to free-float that barrel?

I've never shot one and only seen them briefly at gunshows so I have a question about the gas system: where does it dump the gas? Is it like the AK or FAL and just vent excess straight at the gas-block? Or is it more like a piston-op AR and dump excess further down the pipe?
The reason I ask is that the AR-piston designs tend to run quieter with a silencer.

-T
 
XCR_Fieldstripped.gif


The Op-rod/Piston runs inside a vented gas tube in the upper receiver.

The initial gas impulse is moderated through the adjustable gas block and valve and the residual gas is vented and bled through a small number of holes along the tube.

The inertia of the Op-rod continues the extract/eject/cock cycle and the recoil spring return the lot to battery completing the return/strip/load portion.

Very little (comparatively) residual gas is left to vent into the chamber and ejection port.

The adjustable gas comes with a suppressor setting as a standard.

The Op-rod, bolt and bolt carrier are all moving in a straight line so, in my practice, tends to tame muzzle flip.
 
I had the oportunity to shoot a 5.56 FN SCAR at a Federal instructor training course a few months ago. From my experience, the RA XCR was a much more comfortable shooter and recoil seemed lighter. Accuracy was about the same. I think I'll keep my XCR over the SCAR.
 
In my own case, I feel 'less' recoil, and my sights move less than any AR I have fired.

Many other folks are surprised when they shoot it and say similar things, about the sights not being moved off target.

Go figure.

Fred
 
How is the accuracy on the XCRs?

How well do they do with good ammo from a bench at 100 yards?

-T
 
The folks on the XCR forum board seem to come in at about 1.5 - 2.0 MOA but most of what is shot doesn't seem to be off the bench and is in a wide variety of weights and manufacturers.

If you go to the board and ask I do know there are a number who handload for accuracy.

www.xcrforum.com
 
How well do they do with good ammo from a bench at 100 yards?
Click to expand...

I don't bench my rifles anymore, because I don't shoot rifle events anymore either. (I used to shoot service rifle events)

I am much more interested in practical accuracy, in the field. I find the trade off of reliability vs accuracy that the chromed barrel and chamber normally give you are worth it.

IIRC my carbine shot 1 1/2 @ 100yds (that was more of a field support than benched), with Lake City M855. Good enough for me. As I find it difficult to find Lake City 855 regularly at a price that is tolerable, I really don't find chasing accuracy as very productive. I shoot a lot of Wolf 62gr for grins and giggles. For competition and impromptu bullseye, what ever brass cased 62 grain ammo I happen to have. I still like the Lake City M855 best, just hard to find and pay for. I keep some in my deep storage for those special reasons and occasions. For home defense I use Cor-Bon 62gr DPX in the primary mag. All the back up mags have M855.

As stated earlier, ALL weapons, ammo etc. are a trade off. Decide what is most important to you, and go. In a fighting weapon I choose practical reliability by a long measure over any second feature or ability (that includes magazines too).

The benefit of combat experience.

Go figure.

Fred
 
How is the accuracy on the XCRs?

How well do they do with good ammo from a bench at 100 yards?
Click to expand...

Tyris,

Regarding your question about floating the barrel, all XCR barrels are as free floated as they can be from the factory. That upper is monolithic, and there is no forward contact on the barrel other than the gas interface.

Regarding accuracy; to date I have fired only Hornady 55gr FMJ plinking handloads for accuracy (keep in mind I am not the perfect shooter, nor am I using the perfect scope for the application). My rifle has done sub 2" in my hands with that bullet and about 22.8gr of H335.

I have been meaning to shoot some better bullets, and have some 69gr SMK and 60gr VMAX on hand that I intend to load up soon.

As stated, the XCR barrels are *not* match grade accuracy barrels (5.56 spec chambers, chrome lined bore and chamber, equipped with A2 FS from the factory), but I'd expect their accuracy potential to be on par with any rifle using that type of barrel in a free float configuration. I would also hope that a true match grade barrel would be released eventually; though there is no speculation on that front currently.

Also keep in mind that currently, the XCR does not come with a nice trigger from the the factory. If you want to target shoot for accuracy, you will need a trigger job. I got the $49 4.5lb Bill Springfield job done on mine, and the trigger is just as he advertized now: clean consistent break at around 4.5lb, no takeup. Great improvement over factory.

RA also states that they are working on a factory match trigger, release TBD.
 
As Chieftain and NY32182 have already mentioned, this platform was not designed as a long range, exceptional accuracy, target rifle but as a reliable, flexible, easy to maintain and clean weapon for combat/adverse conditions.

As it is, it is probably more accurate as a rifle than most of the users.

I would be comfortable in saying accuracy will consistently and comfortably exceed minute of bad guy well out past 200 metres.......
 
everallm, I agree with your statement seeing that the current barrel offerings are more geared toward a military type application rather than target shooting. However; I would expect the XCR to be capable of at least as much accuracy as a factory AR15 with a barrel of the same type, and probably more seeing as its free floated.

I think the design of the upper could also eventually lend itself to great accuracy if they ever decided to take it in that direction. I.e., drop in a match grade 6.5 Grendel barrel (not currently in existance, but all they'd have to do is produce the barrel) and a true match grade trigger (RA has stated this is being designed now). I think you'd have a rifle that could print some very nice groups indeed.
 
X2 the charging handle, the ASA left side charger upper can be had for $299. It would make a bargain bin rifle about the same for $799.

No, I'm not preaching heresy. The change from DI to piston isn't a documented improvement, just a selling point to those not convinced by the AR's 45 year history of good service. There are quite a few million servicemen and women who never had a problem with the M16 series.

Adding a quad rail isn't a plus feature, it's a necessary evil to mount large and heavy old school lights and lasers with inefficient batteries. All that stuff is getting unitized, and rail mounts minimized on newer designs.

Add a quad rail, the tube stock, another $450, and you're still way under the XCR's price. You also have many sources to get critical parts.

The ACR's upper isn't forged, it's extruded, I suspect the XCR is the same. Extrusion cross sections are finish shaped in the die, there is only the additional machining for the rail ladders and a few pin holes, etc. You basically take a stick of upper and cut it. Nice for different length barrels, but not that expensive. In fact, it's a cost savings over drop forged, as a bad piece could be salvaged for a shorter barrel. Scrap from that would be scrap, a scrap forged upper is quite a bit more lost work in progress.

I have no doubt someone could make an extruded monolithic upper with no rails and sell it for half the ones on the market. Bolt on rails would do, and a long tube socket to mate with the barrel nut sprockets would torque it.

All that aside, I have to ask, where is the advantage to the shooter in the XCR when some guy in the Ozarks can mail order similar components and build an AR that does the same - for less?
 
Not to start an argument, but I think we can all agree a piston seems to be a more reasonable and practical application when dealing with a tactical rifle like this. As much as I love cleaning my m-4 (army issued) for hour every time we go to the range because hot gas and carbon have been spread directly to my bolt, I think it makes more sense to have a piston.

Also I have read over reviews and forums for the past 4 hours on the XCR while pulling my toc shift here in Iraq and user after user have said that the recoil is surprisingly less then the m-4 they shoot.

Another thing that has me very exited to buy this weapon after this deployment is the fact I can throw a butt-stock on this rifle with some what of an angle so the gun sits higher while the stock is low in to my shoulder. I found that this was very useful when shooting AK-47s.

All in all I think this is going to be an affordable weapon when compared to its SCAR counter part, with reasonably the same performance if better its a shame that this weapon was disqualified in the race for the best SOCOM weapon due to a technicality....
 
Have fun waiting for it if you order it. I ordered mine 8 weeks ago. It was supposed to arrive in 2 weeks, but due to the factory needing to be retooled (no idea why...) and so on it has been delayed this long. Supposed to ship out the 16th though... (crosses fingers).

That said...I'm still happy I ordered it. Its one of the most modular and cost effective rifles around right now.
 
The army said, "NO! I will not let a cost efficient, effective, and reliable rifle into my ARMY unless you can get me the blank firing adapter by 0800 today!"
 
Hmmm...

VERY nice rifles those XCR's, but they looks suspiciously VERY similar to the nearly 3 decade old banned Daewoo's....

XCR_Fieldstripped.gif


Yes there are some improvements to be sure...rails and left side charging handle but a very fine copy of my DR-200's with a modernized upper. One thing i do NOT like on the XCR is the the limited amount of tilt in the upper from the lower compared to the full 90 degrees see on my Daewoo. JMHO.
 
The army said, "NO! I will not let a cost efficient, effective, and reliable rifle into my ARMY unless you can get me the blank firing adapter by 0800 today!"
Click to expand...

Yup.

You should read the history of the shoot offs that lead to the Beretta being chosen. Some times small administrative foul ups can cost a weapon it's chance to compete.

Remember these are the same folks who will be handling all our healthcare soon too.

Yes there are some improvements to be sure...rails and left side charging handle but a very fine copy of my DR-200's with a modernized upper. One thing i do NOT like on the XCR is the the limited amount of tilt in the upper from the lower compared to the full 90 degrees see on my Daewoo. JMHO.
Click to expand...

I liked the early Daewoo's shot the two models they imported. Just couldn't find a place to to get parts. No support at all, at least 10-15 years ago. Has anything changed?

Go figure.

Fred
 
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