Robarms XCR FAQ post
- Thread starter SIGGER
- Start date
Now this is the adapter that we should have seen first from Northeastern Arms or Neit Arms, so how bout it boys, is this coming soon to a theater near us?
http://3.bp.########.com/_Re-212oAY84/TDSY7pSqYpI/AAAAAAAAAwE/viQtN9VIgQo/s1600/4_2299.jpg
http://3.bp.########.com/_Re-212oAY84/TDSY6i-uWfI/AAAAAAAAAv0/jvC91GDXXRo/s1600/2_2297.jpg
All images from here: http://firearmsandtraining.########.com/2010/07/xcr-straight-stock-adaptor-first.html
other images can be found here: http://xcrforum.com/index.php?topic=7971.0
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At some point there will eventually be a government other than the Conservatives in office, when that day comes the more XCR owners the better.
Everyone should buy two!!
Plus an "M" model as well.
Sounds like a plan! Gives me an excuse to get one in green or tan.
For those interested:
IMPORTANT BREAK IN PROCEDURE!!!
The XCR is one of the most reliable rifles money can buy.
However, they must be "broken in" properly before they are reliable. The break in period is approximately 300 rounds.
During this period parts slightly wear against each other until they glide smoothly.
If you use weak ammunition such as Wolf during the break in period, you may experience malfunctions which are caused by the bolt not moving back far enough when the rifle is fired. Here's a list of these malfunction:
1) The bolt does not go back far enough to pick up the next round and forces the round forward by the middle of the cartridge case. (We refer to this as a "short feed"). Many think this is a failure to feed; it is not.
2) An empty case gets caught between bolt and receiver such that the empty case is sticking out of the ejection port. (This is referred to as a "stove pipe".)
3) An empty case is not ejected and an empty case is shoved back inside the chamber. (Note: sometimes the empty case has swollen and it's hard to pull back on the charging handle.) And
4) An empty case and an unfired case get stuck in the action.
These malfunctions are all caused by the same thing - The bolt carrier and bolt are not traveling far enough to the rear of the rifle when fired. All these malfunctions will go away as soon as the rifle is broken in.
Suggestions for Easy Break In
1) Make sure the rifle is well lubricated during the break in period. (You should not need much lube after the break in.)
2) Use hot ammo such as "American Eagle" during the break in period. (Note: Weak ammo such as "Wolf" and other light ammo will cause you grief during the break in period.) And
3) Leave the gas setting to setting 4 (the highest setting).
4) We love to talk to our customers. However, it's best to follow these procedures before calling.
Reason for the Break In
The more the XCR is shot the smoother it gets. The XCR's parts are made on modern CNC equipment and have nice surface finishes. However, some parts simply need to wear together to work their best. We could have designed the XCR so that it used additional force to cycle the system from the beginning so that no break in would have been necessary. Had we done so, there would have been little difference between the highest and lowest gas settings and the rifle would always cycle harder that it would need to once it was broken in.
After the Break In
After the break in, the rifle will function reliably with hot ammo such as "American Eagle" on position 2 (this may vary from rifle to rifle). Weak ammo such as "Wolf" will function reliably on setting 4 (the highest setting).
If you are still having problems, check the following: (Follow safety precautions in the "Operator's Manual" and make sure the rifle is not loaded.)
1) After the firearm cools, grab the gas block and make sure it is tight and not moving. Tighten it if moving.
2) Remove the upper receiver from the lower receiver. Check the ejector and make sure it is tight. Then with the upper receiver upside down, take a hold of the recoil spring guide and slide the bolt carrier assembly back and forth in the receiver. Make sure it slides freely and does not bind against the ejector.
The gas valve should be set so that the empty cases are ejected approximately 8' to 15' from the rifle. If some empty cases are ejecting only a few feet, you're gas setting is not high enough and your sure to experience a malfunction.
We thank you for purchasing our product. Should you have any problem or question whatsoever, please do not hesitate to contact us.
Rifle Cycled Fine for 250 Rounds then Quit Cycling?
We've had this happen a few times. The first thing to check is your gas block.
Once in a while the gas block comes loose and moves forward. If it moves forward, it will not let the gas go where it should and it won't cycle.
1) Just undo the allen head screw.
2) Move the gas block into place.
3) Re-tighten the allen head screw.
There's always a little gas which leaks around the gas block. This gas actually locks up the allen head screw so no Loctite is needed. This usually happens if that screw was not tight enough to start with. Once it's tightened up right, it will never come loose on its own.
IMPORTANT BREAK IN PROCEDURE!!!
The XCR is one of the most reliable rifles money can buy.
However, they must be "broken in" properly before they are reliable. The break in period is approximately 300 rounds.
During this period parts slightly wear against each other until they glide smoothly.
If you use weak ammunition such as Wolf during the break in period, you may experience malfunctions which are caused by the bolt not moving back far enough when the rifle is fired. Here's a list of these malfunction:
1) The bolt does not go back far enough to pick up the next round and forces the round forward by the middle of the cartridge case. (We refer to this as a "short feed"). Many think this is a failure to feed; it is not.
2) An empty case gets caught between bolt and receiver such that the empty case is sticking out of the ejection port. (This is referred to as a "stove pipe".)
3) An empty case is not ejected and an empty case is shoved back inside the chamber. (Note: sometimes the empty case has swollen and it's hard to pull back on the charging handle.) And
4) An empty case and an unfired case get stuck in the action.
These malfunctions are all caused by the same thing - The bolt carrier and bolt are not traveling far enough to the rear of the rifle when fired. All these malfunctions will go away as soon as the rifle is broken in.
Suggestions for Easy Break In
1) Make sure the rifle is well lubricated during the break in period. (You should not need much lube after the break in.)
2) Use hot ammo such as "American Eagle" during the break in period. (Note: Weak ammo such as "Wolf" and other light ammo will cause you grief during the break in period.) And
3) Leave the gas setting to setting 4 (the highest setting).
4) We love to talk to our customers. However, it's best to follow these procedures before calling.
Reason for the Break In
The more the XCR is shot the smoother it gets. The XCR's parts are made on modern CNC equipment and have nice surface finishes. However, some parts simply need to wear together to work their best. We could have designed the XCR so that it used additional force to cycle the system from the beginning so that no break in would have been necessary. Had we done so, there would have been little difference between the highest and lowest gas settings and the rifle would always cycle harder that it would need to once it was broken in.
After the Break In
After the break in, the rifle will function reliably with hot ammo such as "American Eagle" on position 2 (this may vary from rifle to rifle). Weak ammo such as "Wolf" will function reliably on setting 4 (the highest setting).
If you are still having problems, check the following: (Follow safety precautions in the "Operator's Manual" and make sure the rifle is not loaded.)
1) After the firearm cools, grab the gas block and make sure it is tight and not moving. Tighten it if moving.
2) Remove the upper receiver from the lower receiver. Check the ejector and make sure it is tight. Then with the upper receiver upside down, take a hold of the recoil spring guide and slide the bolt carrier assembly back and forth in the receiver. Make sure it slides freely and does not bind against the ejector.
The gas valve should be set so that the empty cases are ejected approximately 8' to 15' from the rifle. If some empty cases are ejecting only a few feet, you're gas setting is not high enough and your sure to experience a malfunction.
We thank you for purchasing our product. Should you have any problem or question whatsoever, please do not hesitate to contact us.
Rifle Cycled Fine for 250 Rounds then Quit Cycling?
We've had this happen a few times. The first thing to check is your gas block.
Once in a while the gas block comes loose and moves forward. If it moves forward, it will not let the gas go where it should and it won't cycle.
1) Just undo the allen head screw.
2) Move the gas block into place.
3) Re-tighten the allen head screw.
There's always a little gas which leaks around the gas block. This gas actually locks up the allen head screw so no Loctite is needed. This usually happens if that screw was not tight enough to start with. Once it's tightened up right, it will never come loose on its own.
That stock adapter looks awesome. Just bought one on Sunday. XCR light in .223. I am excited as hell. I should see it in the mail Thursday. I am chewing my fvcking nails right now having it go through Canada post because CFC could not do their thing on weekends? WTF.. But they would rather have a bunch of non PAL holders fondle fvck my rifle on the journey. And have to go pick it up in the shopping mall at a fvcking post office. That way I also have to walk it out. That is just pure retard on the CFC's part. They dont want to do transfers on the weekends anymore? I want to write a letter to them, but have to calm down first. Either way I have a nice rifle coming. Sorry for derailment of thread, but I just read the entire 30 pages and gained alot of valuable info on break -in periods etc. Thanks for the tips everyone. Cheers.
aftermidnight
CGN frequent flyer
- Location
- West Kelowna BC
Looks eerily familiar..
aftermidnight
CGN frequent flyer
- Location
- West Kelowna BC
they work with both.. the threads are the same .. the difference is in the tube diameter for the stock itself. milspec being slightly smaller. best way to think of it as commercial being the major diameter of the threads.. milspec being the minor diameter.
Cheers. thanks for clarifying.
