Building the Canadian Semi-Auto STEN

[tiriaq]

Cut the handle off. Drill or grind the stump until bolt can be removed. A matter of minutes. Once the bolt is out, drill out remains of cocking handle from both sides, if the bolt is to be reused, otherwise just replace it.
Welding the recoil spring guide retainer solidly to the head casing would keep the bolt in longer, the stock could still be removed.