Since people are posting their personal experiences...
Post in reference to carrying in backpack -
http://www.vdmsr.com/2014/12/vertx-gamut-update.html
I have two folding adapters. One is a Gen3 (newest) and one is a Gen2. The Gen2 center screw ring (the one that attaches the adapter to the lower) has walked out me during training, thankfully I noticed it and tightened it up, no issues since.
The Gen3 has no such issue and just works. Both adapters are on guns that have over 2k rounds through them and I have seen no issues. I carry one that is on my pws mk107 sbr daily and it has no problems. I know a bunch of guys (including people that could be referred to as "operators") who have them at work and have experienced no issues.
I use PWS enhanced tubes/buffer's on both of mine and have seen no abnormal wear or issues.
I have also contacted law tactical several times in reference to several questions and they have always been fairly quick to respond.
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