Just in case you wanted to thread a CRB/SO 16" barrel, or cut down a CRB to SBR length and then thread it, here are a few nuggets:
1. Any alteration of the Vector not performed by KRISS USA automatically voids the owner's lifetime warranty.
2. KRISS USA's charge to convert the CRB/SO 16" firearms to a 5.5" SBR with threads includes an upgrade to a 16mm barrel diameter from the stock 15mm barrel. They have found through extensive testing that a 15mm barrel does not provide adequate strength for the threads. Therefore, according to the manufacturer, you are absolutely creating a safety hazard if you thread a 15mm barrel.
2. KRISS USA's charge to convert the CRB/SO 16" firearms to a 5.5" SBR with threads includes an upgrade to a 16mm barrel diameter from the stock 15mm barrel. They have found through extensive testing that a 15mm barrel does not provide adequate strength for the threads. Therefore, according to the manufacturer, you are absolutely creating a safety hazard if you thread a 15mm barrel.
3. KRISS USA charges $250 to completely disassemble the firearm, install, test and certify the new larger barrel plus $150 for the threads and cap, plus the return shipping.
The service and price are not apparent on their website, so contact them directly for the most current info.
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