Quote:
Originally Posted by subtletrouble
since i have 3 we m4s i caved and bought the open bolt and plan on ordering the vsz to compare the both
imo in my closed bolt system i am using the stinger hopup with a custom ball bearing and rubber piece because i found the original did not allow me to adjust it at all. i could turn it all the way up and it still wouldnt adjust the hopup. with the new custom ball bearing (used a piece of solder and part of an old hopup rubber) i have my closed bolt shooting more accurately than it has since ive owned it combined with the tight bore inner barrel it shoots fantastically.
with the open bolt I have quite a few beefs. the new bolt after 1 game has suffered major damage in a variety of areas and have left many metal shavings all over the place ontop of that the plastic part of the bolt is not fully cycling back and fourth so my first shot is generally amazing and goes a good 50 or so feet 2nd shot goes to about 20ft 3rd shot 10-5 feet and 4th to 5th shot goes to about 2 -3 feet if that. I have tried examining it and cant determine why it wont cycle back and have tried various lubes and oils and grease and still no go. so imo im not that happy with my open bolt purchase and i cant find any helpful information on how to proper dissemble the new bolt mainly the plastic piece. ive also found it very hard to adjust the hopup and when i finally found an alan key that would fit it didnt seem to want to turn at all and im not even sure if it adjust it or not. another issue is since converting the mags ive have found the the new feed lips are being damaged quite badly right away and that mags will not always fit into the magwell some times i have to push it up hard and wiggle it around to get it to lock into place. everything is installed correctly so again im not sure what caused these issues but until i figure them out i would have to recommend the vsz unless someone can put these issues to rest.
the pros to the new open bolt are the recoil has seem to increase quite abit yay for recoil lol
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I'm no expert but there is a pin in the stock acting as a stop for the metal cylinder in the stock - the retaining screw holding the pin should be screwed down or it will scrape the bottom of the bolt and it may not cycle all the way back.
Also don't slap a loaded mag into the magwell if the bolt is forward. You can potentially break the plastic nozzle since the bb in the mag is actually hitting the nozzle from the bottom. I pull the bolt back before inserting a mag, it locks in place without any problem.