XCR-L spare parts kit recommendations

Mr Wolverine said:
Firstly not 1500 XCR on back order but a total of over 1500 back orders made up of all sorts of things.

Yes, when we have a rifle and accessories on a back order it is very differcult to hold items until the order is complete, we would much rather ship what we can when we can but we always try and work out a method that works for both the customer and us.
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Awesome, should I call in and let you guys know to ship the gun separate of the mags if they don't come together.

or

Will you guys give me a call if the gun gets here and the mags do not, to ask what I would like to do?
 
Too the three people whom are saying there XCR bolt release is letting go, I made a post outlining the problem is the XCR FAQ thread located here : http://www.canadiangunnutz.com/foru...06-Robarms-XCR-FAQ-post&p=8621863#post8621863.

The problem is the magazine follower does not push the catch up high enough to make a large surface of contact on the bolt. It is not the fault of the magazine. if you loosen the screw on the bottom and give it 1/8" of play you can manually push it up to lock it and it locks great. the only problem is the follower wont push it that high to lock it on an empty mag. As soon as my XCR-M comes back from the machinist, my XCR-L is going in and he is building me a new bolt catch. It will be 1/8" longer so the tabs will hang down 1/8" lower than the trigger guard. It will also have the tab that the magazine follower pushes up on made into an L so it will hang 1/8" into the magwell. and subsequently be raised an 1/8" higher from the magazine follower. It wont be cheap... I figure it will cost me $350-$400 to have the one off part built. He is willing to do a "production run" but the price is still gunna be steep. my estimate would be about $150-$200 per piece. If anyone is interested I can get him to build the one off and I will demonstrate it with an actual confirmed price?

Just too add on my XCR-M is there because I tried to remove the bolt and it spun the helicoil out about 1/6" then when I tightened it it would not tighten enough to hold the barrel. unknowing of this fact I tried to tighten it more and I ended up tearing out all the thread in the aluminum. The machinist is building a stainless tapered collate I designed, that will go from the inside out, it has a split pin to keep it from rotating when you tighten the bolt. and the force of the bolt pushing the collate out locks the collate in tight. this removes all chance of the aluminum stripping again. he figures $150 for that fix. If and when, I strip the XCR-L out I will do the same thing to it, threading into aluminum is a horrible technique and should be avoided.

\\\Disclaimer For Flamers///
If anyone wants to judge my opinion on threading into aluminum, go right ahead and blame me for being an idiot and over tightening it, yes I did screw up. I'm a journeyman welder who has 3 years machine shop experience, I also have done very basic machining myself. NEVER have I seen a product built with threading into aluminum cause everyone knows its a disaster waiting to happen. tapered collates and or through bolt and nut set ups, are UN-officially the only way to fasten aluminum other than welding it... Products with tapped aluminum are purely poorly designed.
 
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The receivers on the XCR rifles, both L (Light caliber) and M (Medium caliber) models are aluminum . The barrel retaining bolt should be torqued to 250 inch pounds. This is the reason that they are all factory fitted with heli coils otherwise the steel bolt would quickly strip the threads in the aluminum receiver. To best of my knowledge no receivers were manufactured without the heli coil.
 
Mr Wolverine said:
The receivers on the XCR rifles, both L (Light caliber) and M (Medium caliber) models are aluminum . The barrel retaining bolt should be torqued to 250 inch pounds. This is the reason that they are all factory fitted with heli coils otherwise the steel bolt would quickly strip the threads in the aluminum receiver. To best of my knowledge no receivers were manufactured without the heli coil.
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I will double check but I have had my bolt out many times on the L and never noticed a helicoil. I will assume you are correct.

edit:
I stand corrected, there is indeed a heli coil in the L. Sorry for the misinformation I will edit my above post accordingly. I'm happy to know that my M was not a patch job lol. I am still modifying them though lol, should it not work wolverine will get some more income when I order a new upper, and you can smile and laugh at my stupidity and stubbornness.
 
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C.Tremblay said:
I will double check but I have had my bolt out many times on the L and never noticed a helicoil. I will assume you are correct.

edit:
I stand corrected, there is indeed a heli coil in the L. Sorry for the misinformation I will edit my above post accordingly. I'm happy to know that my M was not a patch job lol. I am still modifying them though lol, should it not work wolverine will get some more income when I order a new upper, and you can smile and laugh at my stupidity and stubbornness.
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I will not laugh at your stupidity and stubbornness (your words not mine) I admire and respect your desire to fix a problem real or otherwise, yourself, don,t forget we are here to support you. Well done.
 
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C.Tremblay said:
Too the three people whom are saying there XCR bolt release is letting go, I made a post outlining the problem is the XCR FAQ thread located here : http://www.canadiangunnutz.com/foru...06-Robarms-XCR-FAQ-post&p=8621863#post8621863.

The problem is the magazine follower does not push the catch up high enough to make a large surface of contact on the bolt. It is not the fault of the magazine. if you loosen the screw on the bottom and give it 1/8" of play you can manually push it up to lock it and it locks great. the only problem is the follower wont push it that high to lock it on an empty mag. As soon as my XCR-M comes back from the machinist, my XCR-L is going in and he is building me a new bolt catch. It will be 1/8" longer so the tabs will hang down 1/8" lower than the trigger guard. It will also have the tab that the magazine follower pushes up on made into an L so it will hang 1/8" into the magwell. and subsequently be raised an 1/8" higher from the magazine follower. It wont be cheap... I figure it will cost me $350-$400 to have the one off part built. He is willing to do a "production run" but the price is still gunna be steep. my estimate would be about $150-$200 per piece. If anyone is interested I can get him to build the one off and I will demonstrate it with an actual confirmed price?

Describes the problem my -L is having. On further inspection manually pushing the catch up does lock the bolt tightly requiring a hard jar (one that hurts the hand) on the bottom of the handle to let go (as expected). Got a quote of $32 shipped to BC to get new bolt catch from WOLV. Looks like it won't fix the problem. $200 for new machined catch is kinda steep for my range toy.

Just too add on my XCR-M is there because I tried to remove the bolt and it spun the helicoil out about 1/6" then when I tightened it it would not tighten enough to hold the barrel. unknowing of this fact I tried to tighten it more and I ended up tearing out all the thread in the aluminum. The machinist is building a stainless tapered collate I designed, that will go from the inside out, it has a split pin to keep it from rotating when you tighten the bolt. and the force of the bolt pushing the collate out locks the collate in tight. this removes all chance of the aluminum stripping again. he figures $150 for that fix. If and when, I strip the XCR-L out I will do the same thing to it, threading into aluminum is a horrible technique and should be avoided.

Is there a best way to secure the barrel bolts? Locktite makes the bolt hard to turn for barrel changes. Grouping suddenly goes to hell, bolt is loose. No torque wrench so agree hand tightening a steel bolt onto aluminum is not preferable. EDIT: NVM, see the helicoil is a thread bushing

\\\Disclaimer For Flamers///
If anyone wants to judge my opinion on threading into aluminum, go right ahead and blame me for being an idiot and over tightening it, yes I did screw up. I'm a journeyman welder who has 3 years machine shop experience, I also have done very basic machining myself. NEVER have I seen a product built with threading into aluminum cause everyone knows its a disaster waiting to happen. tapered collates and or through bolt and nut set ups, are UN-officially the only way to fasten aluminum other than welding it... Products with tapped aluminum are purely poorly designed.
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Mr Wolverine said:
I have spent most of today doing a stock check on XCR parts and we have four in stock. Some of the counts were out so may not have shown in stock, give us a call next week.
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I'll take one. Does it come with the roll pin or is it sold separate? Could I reuse the old one?
 
cavegoon said:
Hello Wolverine,

Just a gentle prod for you folks... Any progress on putting these spare parts kits together?
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Hopefully Rob Arms will ship us a bulk order of parts within a two weeks, assuming we are not missing any items we should be able to assemble the kits after that. So best ETA is 4-6 weeks, but anything can happen!
 
Mr Wolverine said:
Hopefully Rob Arms will ship us a bulk order of parts within a two weeks, assuming we are not missing any items we should be able to assemble the kits after that. So best ETA is 4-6 weeks, but anything can happen!
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Please make sure one is set aside for me. After all, it was my ingenuity that started this mess... :redface::p:cool:
 
Mr Wolverine said:
Hopefully Rob Arms will ship us a bulk order of parts within a two weeks, assuming we are not missing any items we should be able to assemble the kits after that. So best ETA is 4-6 weeks, but anything can happen!
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Was the parts order included with the .308 rifles that came in last week or part of the .223 rifles coming in this week?
 
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