Chris is absolutely correct in his statement regarding the Sten. This is ALSO true of almost ALL open Bolt Operated Sub-Machine Guns. The Sten was a good Weapon & did the job it was designed to do. There was NOTHING wrong with the gun. It was the MAGAZINES that caused any of the problems you hear 'stories' about! IE: Jamming, Mis feeds, Dirt/ Debris obstructing the mag Follower Etc Etc. Post war, Sterling designed & manufactured their Superb 34 round magazine. Apart from the potential area that was vulnerable. IE: The Magazine lips, they virtually eliminated Jams & Misfeeds! The gun was extremely reliable when used with these magazines. It was also designed to accept Sten Gun Magazines, that could also be used in an emergency. In the Sterling. HOWEVER, Sterling cleverly designed it so you could NOT use Sterling magazines in a Sten, in standard form! Very Clever! If you were a foreign army & had stens. Thinking if you only bought new Sterling mags, you could upgrade your sten reliability Factor. You could NOT!.....In the US where full auto ownership is possible to the individual. There are aftermarket adapters, that fit in a Sten Mag Housing to allow you to use Sterling magazines! The Gun then becomes eminently reliable, & a pleasure to shoot!