T.B. #4 - How to fix loosen PTW magazine roll-pins

	Technical Bulletin 2006.11.29: How to fix loosen PTW magazine roll-pins
	In our continued pursuit for perfection, SYSTEMA is constantly improving our products through in-house research as well as listening to our users. We are glad that many of our users are supporting us and speaking to us. As a result, we have discovered and confirmed a minor design defect in one of the new components used for the PTW magazines. The issue is related to the new roll-pins failing to secure the internals of the magazine. Under certain conditions, if a PTW magazine is dropped on solid surface (such as concrete floor) from more then a few feet (1+ meter) high, the rounded heads of the roll pin will expand the magazine side-wall while pushing itself towards the center of the magazine. As a result, the internal components of the magazine will be dislodged from its original position, and the roll-pin will also wedge itself against the magazine side-wall. Once the components are misaligned, the magazine will fail to feed bullets properly into the chamber. SYSTEMA and ZSHOT.com are currently working together to arrive at a permanent solution. All U.S. dealers will be eligible to request retrofit components to address this issue (once the solution is finalized) free of charge. On the mean time, users are encouraged to perform this modification which will also permanently address the issue without the need to wait for the retrofit kits. We sincerely apologize for any inconvenience this may have caused our users, and we appreciate your support while we continue to bring you better products. (All images can be clicked for a larger version.)

	1. Remove existing roll pins There are two holes on each side of the magazine side-wall where the pins are supposed to go through, and naturally through each hole there should also be 2 short roll-pins. First make sure the roll pins are properly aligned with the holes. If the pins are already misaligned and they are wedged too tightly against the magazine side-wall, there is a small hole on magazine base plate that you can push a small rod (or screw driver) though, thus pushing the internals back up to where it should be. Once the pins line up with the holes, with the magazine secured, pick one of the hole (either one is fine) and remove BOTH pins inside that hole using a small pin punch. Again, make sure the magazine is secured, the pin and the hole lines-up, and that BOTH pins came out through the other side. Be careful not to lose the roll pins.

	2. Enlarge one end of each roll pin With both the roll-pins removed, take one of them (either one are fine, they are identical) and firmly secured it. (A bench top vice is highly recommended.) Thereafter, using a pin-punch with tapered (pointy) tip, enlarge ONE end of the roll pin. Be careful not to injure yourself, which could happen easily if the roll pin was not firmly secured (e.g. roll pin "tip-over" while you hammer the pin to enlarge the end). If you do not have access to a vice, you can also find a large chunk of metal, drill a small hole in it (do not drill THROUGH the metal), and use the hole to hold the pin while you hammer it. (Wood with a hole drilled usually won't work, as you will basically drive the pin into the wood like a nail.) A flaring tool should also work for this purpose. Here is a picture of the "before" and "after" of the modification. Note that only ONE end of the roll pin needs to be enlarged. Continue to perform the same modification on the second roll-pin removed from step one.

	3. Re-install roll pin With both roll-pin modified (one end enlarged), re-insert the modified roll-pin into the magazine. You must install one roll-pin on each side (i.e. one from the left-side, one from the right-side). When inserting the modified roll-pins, insert the "unmodified" end (the thinner end) first. We will be using the flared end to firmly secure the roll pins against the magazine side-wall, and to prevent it from moving again. Tip: It is very likely that you will require a hammer to re-install the modified roll-pin, as we want the entire roll-pin to be fully inserted back into the magazine, and that the enlarged end is forced back into smaller size during the process. To make it easier (as well as to prevent the magazine shell from getting damaged), place a flat piece of metal (such as the tip of a large flat-head screw driver) over the top of the roll pin before you hammer it. The roll pin should be flush to the magazine wall once you are done, as shown.

	4. Completing the modification Once the first roll-pin is successfully installed, flip over the magazine and repeat step #3 for the other pin. Thereafter, remove the remaining two roll pins from the other hole and perform the same process (from step 1) for the second pair.