Barrels with 3d markings are part of database? (nist.gov)
submitted by NoSpoilersdoctor to r/Glock
![](http://web.archive.org./web/20170701085502im_/https://b.thumbs.redditmedia.com/90427lw3zmgRx0TXiDaBgZfTZl29HV-K59Kg683cbes.jpg)
Silk Sensor Could Speed Development of New Infrastructure, Aerospace and Consumer MaterialsMaterials/3DP (nist.gov)
submitted by abrownn to r/TechOfTheFuture