Air Tube Bands...

[MultimediaMan]

More S200 work...

This gun has an Aeron CZ stock; the stock barrel bands have to be modified to fit the stock. I prefer a free floated barrel. So with that, the journey begins...

The Bands started as extruded 1/2" 6061-T6 barstock. Not my favorite material, but fairly overkill for this. The blocks were roughed out, and set in the Mill Vise with a Mill Stop and milled parallel and perpendicular.

The bottom of the blocks were drilled and tapped for mounting (#10-32 for the Fixture Mount, and M4 x 0.7 for the Forend Mount).

 

The Try-Fit in the forend worked out well... Again, using the Mill Vise and Mill Stop (I am addicted to Mill Stops),  spotted the position of the Airtube hole with a Center Drill.

The next operation could have easily have been done in the mill, but I chose to make a fixture for the Lathe Faceplate:



The part was set in the Fixture with two #10-32 screws (The 2 socket head cap screws parallel with the Faceplate) loosely, a Lathe Center was used to center the part, and the #10-32 screws tightened...



The part was then drilled through and bored to the finished I.D.:



Two post-boring operations were also done on the lathe and faceplate: chamfering each side of the bored holes on each of the blocks.

Try-Fit of the blocks in the Forend with the Air Tube:



The blocks were ganged together with a stub of aluminium turned to a push fit in the air tube bores. The ganged parts were set on a surface plate to align them and set screws were installed into the Forend mounting holes to lock the gang together for profiling in the milling machine:



Note: the blocks are not yet de-burred and polished.

Try-Fit of the Profiled Bands in the Forend with the Air Tube...



Barrel clearance is good, and vertical alignment is also well within tolerance!

Trigger and Air Stripper are next...

[Motorhead]

Billet baby !! ... very unique

[MultimediaMan]

This is how I received it for the most part (no scope)...The Trigger and Bolt handle were temporary fixes...



If this gun looks familiar, it once belonged to Peter over at Topgun Airguns; I bought it from one of his (untarnished) business associates who obtained it through TGAG liquidating assets before his departure for Club Fed. This was an as-is deal and I was well-satisfied. That said, there were a lot of little annoying things wrong with the gun... but nothing some time, patience and ingenuity couldn't fix.