Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits. Anti-spam check. Do not fill this in!==Design== The S17-100 was a blowback-operated submachine gun that was heavily derived from the S1-100's action. The barrel and forward receiver were basically unchanged. However, the trigger was moved to the back of the gun and the return spring was laid out in a more conventional straight tube. The new trigger was a two-stage, centrally-pivoted trigger in which the upper section would give single shots and the lower section, when depressed fully, would give automatic fire. The sighting was identical to the S1-100's and it fed from 30-round magazines. Summary: Please note that all contributions to the Gun Wiki are considered to be released under the CC-BY-SA Cancel Editing help (opens in new window) Retrieved from "https://guns.fandom.com/wiki/Steyr-Solothurn_S17-100"