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Posted: 4/6/2009 6:11:09 PM EDT
Some of the Arsenals have those polymer folding stocks and i want to replace that with the Triangular folder. I assume the stock trunnion and all the other parts are the same as the rest but how hard is it to swap the stock out for another. Meaning not taking out the trunnion. Kvar sells a stand alone triangular stock like this:
From Kvar: "Left-side folding triangular metal stock! It incorporates a slick hinge mechanism for a solid lock-up. Available for the first time as a separate unit, it’s a direct replacement for the solid polymer folder that is standard equipment on the Arsenal SLR-106F and SLR-106FR rifles, and uses the same standard 4.5mm pin. It also has the same pivot pin angle as used on the SLR-106. Rear trunnion with folding stock hardware sold separately. " |
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Tutorial for installing the steel triangle folding stock
First make sure if you are installing this on a Bulgarian rifle that you are using a Bulgarian stock with the proper 4.5mm hinge pin. Russian stocks use a 5.5mm pin. Field strip the rifle by taking off the top cover, removing the recoil assembly, and removing the bolt and bolt carrier. Turn the rifle upside down. Take the pistol grip off. Let the stock "flop" between front and rear lockup positions so you don't have it under spring tension. Using a brass hammer and punch, tap the pin out from bottom to top. Remove the old stock. Turn the rifle right side up. Put the new stock on. Make sure the sling swivel faces the ejection port side when the stock is open. Let the stock "flop" between lock up positions so that it is not under spring tension. I find it also helps to visually look down the hole and line up the hinge hole with the receiver holes before proceeding. You may have to keep the stock in one position or another to line up the holes perfectly while trying to install the pin. With the folding stock in place, put the skinny end of the pin in through the top receiver hinge hole. Tap down with a brass hammer until you can rotate the hinge on the folding stock without it becoming unaligned with the receiver. Then use the hammer and punch to tap the pin in the rest of the way. It literally takes less time to do all of this than it did to type it. I have done all of this with the rifle sitting on my lap, so that should indicate to you how little pounding and hammering it takes. Put the pistol grip back on. Remember that the pistol grip nut is supposed to tilt toward the rear. Open first beer. Drink. Work the stock back and forth to overcome the stiffness. Make sure the stock latches at both the front and the rear. This may require a little bit of hand strength until the stock "wears in" a little. SOME TIPS: Do NOT use excessive force to remove or reinstall the pin, make the stock latch, or for any other reason. Anything beyond "hand strength" to make the stock latch, or anything more than gentle tapping with the brass hammer and punch to remove/replace the pin should be considered too much force. Sometimes the pin will be a little tight and require a little extra force to tap into the hole. It should NOT require a bigger hammer. I have handled one example of a stock that required hitting with my fist and pushing with my open hands to get it to latch a few times until it had a chance to "wear in" a little. Do NOT use tools. I did this on my lap, so it did not require much more than gentle force. |
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I have never had to remove the PG to do this, but I guess it depends on the size of your hammer and punch. I typically use the punch that comes in the cleaning kit and tip tap tappity tap that pin out. I also don't filed strip it, but do clear the chamber. Safety 1st! |
| We should also mention that on a lot of rifles, particularly the Bulgarian SLR106's and SLR107's, if you install the triangle stock then you need to also install another US-made 922(r) compliance part to stay legal. Floorplates or a US-made muzzle brake are the easiest substitutions to make. |
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