Location: Rifles

Discussion: On GunsmithingReported This is a featured thread

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White76Knight
White76Knight
On Gunsmithing
Jul 25 2010, 9:04 AM EDT | Post edited: Jul 25 2010, 9:05 AM EDT
I have posted on my profile that I would like to acquire a FN SCAR rifle in .308 with two of the modular barrel assemblies for versatility. Now as the SCAR is a military rifle, and a relatively new one at that (in fact, I don't even know if they have been fielded or are in full production yet), they will probably not be available at every firearms dealer out there, and so I highly doubt that I am actually going to be able to get my hands on one, especially here in Canada.

Which brings me to my point. I have found a different rifle, also by FN, that is available with both 16" and 20" barrels, seen here:
(16" barrel) http://www.cheaperthandirt.com/62610-1.html
and here:
(20" barrel) http://www.cheaperthandirt.com/55810-55.html

Now as any rifle has to be able to come apart and field stripped for cleaning and maintenance, I presume that these two are no different.

So my question is this: If I had both of these rifles, would a competent gunsmith be able to modify them to be modular. Could both rifles be cannibalized for components to make one modular platform, so that the one barrel assembly could be removed, relatively quickly and without a bunch of specialized tools, and replaced with the other barrel assembly? Is this even possible?

If so, one could avoid having to carry two lower receivers (unnecessary extra weight if they are both the same anyway) and use one receiver for both barrel assemblies.

I freely admit that I don't know enough about the inner workings of this firearm, nor about gunsmithing in general, to be able to answer this myself, so I hoped that someone on here might be able to shed some light on the subject.
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Keyword tags: gun rifle weapon
2WheeledSpeed
2WheeledSpeed
1. RE: On Gunsmithing
Jul 25 2010, 10:22 AM EDT | Post edited: Jul 25 2010, 10:22 AM EDT
I guess it would depend on the design of the weapon, and how much you're willing to pay your gunsmith? I honestly don't know, might be worth just walking into a local gunsmith and asking. They usually have no problem answering questions. Do you find this valuable?    
cyrano222
cyrano222
2. RE: On Gunsmithing
Jul 25 2010, 11:04 AM EDT | Post edited: Jul 25 2010, 11:04 AM EDT
I dont know this specific weapon, but most barrels are threaded into the reciever and are quite difficult and fragile to remove without damaging both parts. As to why you would want two rifles with just a 4 inch barrel difference. The difference in accuracy and velocity loss would be minimal. Just go with the 16 inch and practice more. Do you find this valuable?    
White76Knight
White76Knight
3. RE: On Gunsmithing
Jul 25 2010, 11:20 AM EDT | Post edited: Jul 25 2010, 11:20 AM EDT
"As to why you would want two rifles with just a 4 inch barrel difference. The difference in accuracy and velocity loss would be minimal. Just go with the 16 inch and practice more. "
I'm just going for a proof of concept. If the modular alteration is possible I'd go for custom barrels, probably a short barrel in the 13-14" range and a long barrel in the 22-24" range.
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cyrano222
cyrano222
4. RE: On Gunsmithing
Jul 25 2010, 11:27 AM EDT | Post edited: Jul 25 2010, 11:27 AM EDT
For that situation the best thing I know of is the AR platforms, they make uppers in any configuration you could possibly imagine, and they just pin onto your lower reciever. If you have a thing for the 7.62x51 Knight, Armalight and DPMS I know for sure make one in that caliber. There may be others. The gentleman to talk to about this would be either Herteufenhounden(he carries a 10" ar for work) or Outlawjames who is a gunsmith. Do you find this valuable?    
White76Knight
White76Knight
5. RE: On Gunsmithing
Jul 25 2010, 2:39 PM EDT | Post edited: Jul 25 2010, 2:39 PM EDT
Since posting this thread, I have also found that the SCAR-H and the HK417 (another comparable modular design) are both available in semi-auto only civilian variants. Either the SCAR 17S and the HK MR762 (the two civilian models) should do the job quite nicely, and both of them use a piston instead of direct gas impingement, which is a feature that I like.

I will, however, look into the others that you mentioned as well.
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White76Knight
White76Knight
6. RE: On Gunsmithing
Aug 5 2010, 11:09 AM EDT | Post edited: Aug 5 2010, 11:09 AM EDT
"For that situation the best thing I know of is the AR platforms, they make uppers in any configuration you could possibly imagine, and they just pin onto your lower reciever. If you have a thing for the 7.62x51 Knight, Armalight and DPMS I know for sure make one in that caliber. There may be others. The gentleman to talk to about this would be either Herteufenhounden(he carries a 10" ar for work) or Outlawjames who is a gunsmith."
For what it's worth, I have since done some research on this, and I am now more or less sold on the AR10 platform or some decent clone thereof.

Lots of options, lots of parts and mags and quick change uppers for most any situation, and all in 7.62/.308Win. Love it.
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OutlawJames
OutlawJames
7. RE: On Gunsmithing
Aug 5 2010, 1:26 PM EDT | Post edited: Aug 5 2010, 1:26 PM EDT
"For what it's worth, I have since done some research on this, and I am now more or less sold on the AR10 platform or some decent clone thereof.

Lots of options, lots of parts and mags and quick change uppers for most any situation, and all in 7.62/.308Win. Love it. "
Hey, somehow I completely missed this post till now. But I see you have done your homework and have come up with a very good solution to your question.

And from the standpoint of what you where wanting done, It will be way cheaper for you.
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