TFB Review: 2,500 Rounds On The H&R 635 9mm Subgun

Summary

This article reviews the Harrington & Richardson (H&R) 635, a 9mm pistol clone of the Colt Model 635 SMG, after 2,500 rounds. The reviewer details initial failures to eject across various ammunition types and magazines, which were resolved by carefully tuning the ejector. Once tuned, the straight blowback AR-9 pattern gun proved reliable.