As some of you know I've been doing research on the Remington Nylon 66 line of rifles, which are no longer made and are becoming sought-after collector items. I've found references to suppressed Nylon 66s being used in Vietnam and SE Asia in the '60s and '70s. These were modified by Sionics and issued to the military mostly for clandestine missions - sentry elimination, "snatch operations" and the like. These weapons weighed about 4 pounds and had a "book" range of up to 100 meters. Here's a pic of one of these, later superseded by suppressed Ruger 10/22s.
Full-metal-jacket rounds were specified for these arms, first to assure flawless feeding, and secondly to comply with (not) Geneva Convention but Hague Accord protocols. Until recently, I've been unable to locate any of these rounds - they were hard to get in Vietnam, and are especially rare today. One of my friends is an avid cartridge collector, and was excited to let me know that he had some of these elusive cartridges. I visited him today, and he was kind enough to give me one, which I photographed. The "U" headstamp would indicate manufacture by Remington, which would be natural for the Nylon 66 usage. Again, it's loaded with a FMJ bullet, round nose - no hollow point, not a plated lead type. My friend has chronographed one, and it's in the range of standard-velocity .22 LR rounds.
Here's another shot of that round in the ejection port of a Nylon 66:
I thought you might be interested in seeing what one of these rare U.S. military cartridges looks like!
John

Full-metal-jacket rounds were specified for these arms, first to assure flawless feeding, and secondly to comply with (not) Geneva Convention but Hague Accord protocols. Until recently, I've been unable to locate any of these rounds - they were hard to get in Vietnam, and are especially rare today. One of my friends is an avid cartridge collector, and was excited to let me know that he had some of these elusive cartridges. I visited him today, and he was kind enough to give me one, which I photographed. The "U" headstamp would indicate manufacture by Remington, which would be natural for the Nylon 66 usage. Again, it's loaded with a FMJ bullet, round nose - no hollow point, not a plated lead type. My friend has chronographed one, and it's in the range of standard-velocity .22 LR rounds.

Here's another shot of that round in the ejection port of a Nylon 66:

I thought you might be interested in seeing what one of these rare U.S. military cartridges looks like!
John
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