Bolt Assembly
The bolt is machined to the following dimensions from a suitable section of round steel stock.
CO CO
83mm
13.5mm
13.5mm
BUFFER AND SPRING GUIDE
The buffer is made from a section of hard rubber stock to the following dimensions.
The spring guide is nothing more than a length of 1" diameter tubing.
The tubing should have a wall thickness of 1/8".
- 25mm
ALTERNATIVE BOLT CONSTRUCION METHOD
An alternative to machining the SMG bolt would be to assemble it from the components illustrated below.
- V2" spring pin
The components are fitted to the 8mm bolt section as shown below.
The Y2" spring pin is two inches in length and is silver soldered to the end of an 8mm diameter high tensile bolt. The end of the bolt section being fitted with the firing pin prior to this.
A stack of 1 Y2" diameter washers (with 8mm holes) are then inserted over the bolt section and retained with a nut.
Around 52 washers are necessary to provide the bolt with the required length and weight.
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