UpStateEd
.45 acp
Read that Thordsen FRS-15 rifle stock requires a certain bolt. What is needed for example to use a DPMS .22LR upper on the FRS with the larger cheek piece?
Thanks
Thanks
Thordsen Customs FRS-15 Rifle Stock (bolt requirement)
- Thread starter UpStateEd
- Start date
kev74
20×102mm Vulcan
The thordson stock only replaces the pistol grip and requires removal of the adjusting portion of the stock. No other modifications are necessary. These are both parts of the lower.
Nothing on the upper has to be changed. So what ever bolt works now will work with the thordson.
Nothing on the upper has to be changed. So what ever bolt works now will work with the thordson.
Marine Cpl
.577 Tyrannosaur.
It's the same as your grip Ed. Only the pistol grip screw is needed to install the Thordsen. The grip itself becomes the stock.
UpStateEd
.45 acp
The specs read:
NOT COMPATIBLE WITH A RIFLE LENGTH (A2) RECOIL SYSTEM
So does it require a short buffer and spring etc?
ManrisFrack
6.5 Creedmoor
Yep, also labeled as "carbine" or "mil-spec". The ones that aren't compatible are usually labeled with "A2," "receiver extension," or "rifle buffer". Do an image search and you should be able to figure out the difference between the two.
Marine Cpl
.577 Tyrannosaur.
That's because if the buffer is too long the stock part of the Thordsen would hit it. It has to be a short buffer tube for clearance issues.
UpStateEd
.45 acp
I suspect that the recoil spring is calibrated for the shorter buffer also.
Thanks Guys!
kev74
20×102mm Vulcan
Are you building from scratch or swapping parts. As long as you have a carbine length buffer tube, spring and buffer, you should be good to go.
kev74
20×102mm Vulcan
If you get a kit it will have the right tube, spring & buffer.
Do you mean from thordson? Or something else. I haven't tinkered much with AR's.
Marine Cpl
.577 Tyrannosaur.
For the Thordsen or any system for that matter, standard everything in carbine length. That goes for the tube, spring, and buffer. Only run a heavier buffer if you experience cycling issues.
MikeyCNY
6.5 Creedmoor
Supposedly they are working on a "Gen 2" version, to include rifle length. Should be out soon. Expect 'Gen 1' prices to go down.
As others have said/implied, there is nothing relating to the buffer system that is inherent to the Thordsen other than the physical length of the rifle-length tube being in the way of the rear part of the stock. There are no mechanical parts inside of the FRS-15, itself. It's just a bent tube held on by the grip screw. At one point, I used the tube/cheek-rest portion of a Magpul UBR stock:
instead of Thordsen's tube (which is a normal tube without the adjustment holes for normal adjustable stock) and everything worked fine (plus, it was more comfortable and ... not that I would ever think about doing it, but ... quick/easier to switch back to a traditional AR ... you know, if you were to go to a free state.)
instead of Thordsen's tube (which is a normal tube without the adjustment holes for normal adjustable stock) and everything worked fine (plus, it was more comfortable and ... not that I would ever think about doing it, but ... quick/easier to switch back to a traditional AR ... you know, if you were to go to a free state.)
Marine Cpl
.577 Tyrannosaur.
I used a naked buffer tube. When going to PA, I remove the grip screw, take stock off, install pistol grip and screw, and slide on 6 position stock on naked buffer tube.As others have said/implied, there is nothing relating to the buffer system that is inherent to the Thordsen other than the physical length of the rifle-length tube being in the way of the rear part of the stock. There are no mechanical parts inside of the FRS-15, itself. It's just a bent tube held on by the grip screw. At one point, I used the tube/cheek-rest portion of a Magpul UBR stock:
instead of Thordsen's tube (which is a normal tube without the adjustment holes for normal adjustable stock) and everything worked fine (plus, it was more comfortable and ... not that I would ever think about doing it, but ... quick/easier to switch back to a traditional AR ... you know, if you were to go to a free state.)
I still love that paint job. How's it holding up?
Marine Cpl
.577 Tyrannosaur.
Thanks. Pretty good. No scratches yet.
Same idea. Though, having tried it with a bare tube, myself, the UBR's cheek rest is definitely more comfortable. Heavy stock, though, and a bit expensive (especially, for someone who doesn't convert back too often.)
Have you thought about trying a foam buffer tube cover?
Marine Cpl
.577 Tyrannosaur.
No because then I'd have to remove that to slide the stock on. I have it down to less than 2 minutes now.
I was thinking something that slid on and (especially) off relatively quickly. If the commercial ones are too tight for that, you could buy a couple of sizes of foam tubing and then see if one goes on snug, but not so tight that you can't pull it off in a second. Or contact AR15.com member Stitcher, who makes these:
and see if he would make one with an overlapping split and velcro.
Marine Cpl
.577 Tyrannosaur.
Not a bad idea.I was thinking something that slid on and (especially) off relatively quickly. If the commercial ones are too tight for that, you could buy a couple of sizes of foam tubing and then see if one goes on snug, but not so tight that you can't pull it off in a second. Or contact AR15.com member Stitcher, who makes these:
and see if he would make one with an overlapping split and velcro.