It was quite an eye opener.
A silencer and bi-pod would cost more than the rifle.
So I made my own for no cost. and it works pretty well :-)
Step 1: PVC Pipe
and smoothed the edges with sand paper.
Step 2: Top and Tail
(This had to be drilled through)
Step 3: The Inside
I cut out about 150 of these.
To speed the job up I used a couple of sharp pipes to cut these out.
Step 4: The End Result
The silencer was mounted to the gun with a silencer adapter.
It was screwed on tight to create an internal thread.