Some of the other silenced weapons systems tested at the Small Arms Laboratory during the late 1960s and early 1970s included the following:
- A carbine version of the Remington .22 autoloader, blackened against reflection in daytime and for night ops.
- A camouflaged Ruger 10/22 autoloader in .22 caliber and fitted with a Sionics silencer. Designed for for jungle warefare, sniping, and commando work, this unit was reported in Indochina by a UPI newsman with whom I spoke, He saw one of these in a Laotian training camp staffed by Special Forces and CIA people.
The Remington Nylon 66 was used in Vietnam as a silenced commando weapon prior to 1970, when the Ruger 10/22 carbine, also in .22 caliber, was adopted.
The Remington gun was not satisfactory because it was a difficult gun to disassemble and clean. Both guns have the camouflage finish, while the Remington came in an all-black finish as well.