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Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
Posted: 11/18/2009 7:53:44 AM EDT
How to install a Q/D swivel stud in an A1/A2 buttstock (or at least how I did it). Any more ideas on how to accomplish same are more than welcome.

10 pack of swivel studs from Brownells. They also sell swivel/stud pairs but I plan on repeating this project a few times.
http://i21.photobucket.com/albums/b295/milesvb/PB110327.jpg

A 1/2” CPVC end cap to contain the epoxy inside the buttstock. I trimmed it down to minimize the intrusion into the buttstock cavity.
http://i21.photobucket.com/albums/b295/milesvb/PB110331.jpg
http://i21.photobucket.com/albums/b295/milesvb/PB110332.jpg
http://i21.photobucket.com/albums/b295/milesvb/PB110333.jpg

An A2 buttstock with 1/2” hole drilled for stud and interior foam dremelled out for CPVC end cap.
http://i21.photobucket.com/albums/b295/milesvb/PB110334.jpg
http://i21.photobucket.com/albums/b295/milesvb/PB110329.jpg

End cap held in place with newspapers (scrap styrfoam or wedge of scrapwood will be tried next time).
http://i21.photobucket.com/albums/b295/milesvb/PB110335.jpg

Ready for the epoxy. Use a small piece of tape on the bottom of the stud to keep the epoxy out of the hole.
http://i21.photobucket.com/albums/b295/milesvb/PB110337.jpg

Swivel stud epoxied in place with extra bead of epoxy around base of endcap.
http://i21.photobucket.com/albums/b295/milesvb/PB120340.jpg
http://i21.photobucket.com/albums/b295/milesvb/PB120343.jpg

Final product.
http://i21.photobucket.com/albums/b295/milesvb/PB140348.jpg

Installing a swivel stud toward the front of the buttstock may be my next project. Anyone that has tried this please chime in.
Link Posted: 11/18/2009 10:11:41 AM EDT
[#1]
Link Posted: 11/19/2009 8:52:14 AM EDT
[#2]
Quoted:
That is a nice, workmanlike job.  However, and meaning no offense, you have now made it impossible to fit the buttstock cleaning kit into the stock where it belongs, and where it will be if you ever need it.

Good point. I don't have any intention of ever putting anything in the buttstock although others may need to take that into consideration. The intention was to locate a swivel stud in approximately the same location as a collapsable stock such as a Magpul CTR which doesn't have storage capability.

In addition, what would you do if it became necessary to sling the rifle weak-side?  As the resulting set up is for strong-side-only carry/use, weak side carry/use is problematic.

Another good point. It should be simple enough to add an additional swivel stud on the opposite side with either another endcap for the epoxy or maybe epoxying in a dowel of some sort that spans the entire width of the buttstock cavity and drilling from both sides.

Lastly, I can't see how the sling, as viewed in last pic can be of much use as a shooting aid.  Your rig is optimized for ease of carrying, with other considerstions taking a distinct back seat.

Ease of carrying was the primary consideration for this rig although the sling will steady the rifle a bit. The LaRue handguard doesn't have a forward swivel stud for use as a ready sling around the elbow but a picatinny swivel stud can be added.

Again, and meaning no offense, I suggest a different approach next time.  YMMV.


Thanks for the input.

Link Posted: 11/19/2009 12:23:44 PM EDT
[#3]
I think it looks good and nice craftsmanship; nice idea,  It's in the same location as the ACS, UBR and CTR so it has the same capabilities/limitations as those stocks.  It's a good solution for A1 and A2 stocks.  Of course you can't store as much in there, but if you don't store anything in stocks anyway it is no big deal.

Another one on the other side would make it a little more ambidextrous, but doesn't sound like you need it for that weapons purpose.

How did you attach the QD cup to the PVC cap?  Did you put a short bolt through the QD and into the bottom of the PVC cap, secured by a nut on the other side?  Since the PVC cap is bigger then the hole in the stock, it won't pull through and the bolt/nut would make sure the QD stays put if the epoxy breaks free.  (Maybe you did this and I missed it.)


Link Posted: 11/19/2009 1:43:43 PM EDT
[#4]
Awesome!  Nice Idea and nice Job!
Link Posted: 11/19/2009 2:08:29 PM EDT
[#5]
Nicely done. I did this with an M1A scout recently:

http://www.ar15.com/forums/topic.html?b=6&f=6&t=172025&page=73#2610256

Two things: I've found the rifle tucks in to the body better when the rear sling is mounted on the opposite side of the stock. You might want to experiment with any carbines you have that have QD sling mounts set up that way. Second, I'd recommend to anyone doing this that they test all the female QD hardware you get from Brownells. One I got is loosey-goosey, and would not hold on to any of my Uncle Mike's male QD hardware under load. Luckily I have some other QD studs that the same piece of hardware doesn't have issues with.
Link Posted: 11/20/2009 8:49:29 AM EDT
[#6]
Quoted:
How did you attach the QD cup to the PVC cap?  Did you put a short bolt through the QD and into the bottom of the PVC cap, secured by a nut on the other side?  Since the PVC cap is bigger then the hole in the stock, it won't pull through and the bolt/nut would make sure the QD stays put if the epoxy breaks free.  (Maybe you did this and I missed it.)




The PVC cap really serves no other purpose than to contain the epoxy. After I had the cap wedged in place with newspaper (or use whatever works) I filled the PVC cup partially with epoxy and slowly pressed in the QD cup until almost flush. The 1/2" hole in the stock gave a hard press fit on the QD cup so no other attachment was neccessary. Any excess epoxy will find an avenue of escape but it can be carefully trimmed off with an x-acto before it gets too hard or I suppose it could be dremelled off after hardening if you want. Apparently I got lucky and filled the PVC cup with just the right amount of epoxy because very little dripped out. The ridges in the QD cup should offer very good resistance to the stud pulling out. I was actually more concerned with the cup popping off into the stock if the swivel is struck. If any failures occur I'll be sure to report back but I've had really good results with the 2-ton epoxy on various past projects so I expect that it will hold.

Link Posted: 11/20/2009 8:55:29 AM EDT
[#7]
Quoted:
Nicely done. I did this with an M1A scout recently:

http://www.ar15.com/forums/topic.html?b=6&f=6&t=172025&page=73#2610256

Two things: I've found the rifle tucks in to the body better when the rear sling is mounted on the opposite side of the stock. You might want to experiment with any carbines you have that have QD sling mounts set up that way. Second, I'd recommend to anyone doing this that they test all the female QD hardware you get from Brownells. One I got is loosey-goosey, and would not hold on to any of my Uncle Mike's male QD hardware under load. Luckily I have some other QD studs that the same piece of hardware doesn't have issues with.


Nice work. Obviously great minds think alike.

And ditto to testing each stud before installation. I found one in that 10 pack that had the groove for the swivel bearings machined too shallow. The swivel simply couldn't lock into it.
Link Posted: 11/20/2009 10:14:07 AM EDT
[#8]
I used the same parts on my AK.  I installed the QD stud near where the stock meets the receiver.  Since my AK sling uses a MASH hook for the front, I can pull it off the front swivel and attach it to the rear, giving me a 1-pt setup.
Link Posted: 11/20/2009 11:18:39 AM EDT
[#9]
Good stuff.
Link Posted: 11/20/2009 11:21:28 AM EDT
[#10]
Quoted:
I used the same parts on my AK.  I installed the QD stud near where the stock meets the receiver.  Since my AK sling uses a MASH hook for the front, I can pull it off the front swivel and attach it to the rear, giving me a 1-pt setup.


We can haz picturs?

Link Posted: 11/22/2009 11:14:23 AM EDT
[#11]
Quoted:
Quoted:
I used the same parts on my AK.  I installed the QD stud near where the stock meets the receiver.  Since my AK sling uses a MASH hook for the front, I can pull it off the front swivel and attach it to the rear, giving me a 1-pt setup.


We can haz picturs?



Here toy go.
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