A few months back someone posted a comment mentioning some .22 rifles, semi-autos that fired from an open bolt. An acquaintance turned up with one today, and I can't find that comment to check the information.
This is marked 'Ranger .22 Long Rifle Model 34A' on the barrel, no other makers mark. Uses a box magazine, safety is on the left side of the receiver, push forward/pull back. The magazine latch is set into the floor plate; it's spring-loaded, pull back to release, and fits into a slot in the mag body.
Anyone know anything about this thing? I searched Rimfire Central, The High Road and did some web searching with negative results.