AF Texan LSS innards

If you've got skills and access to material, I'd go with a stock long barreled Texan and DIY.

All you have to do on the valve to get 50 FPS more is pull the poppet spring and the flow restricting spring retainer.

Convert to a carbon fiber bottle BUT you need to contact Dyotat100 (Doug Noble) for a new hammer spring so you can fill above 3000 and up to 3500 (bad efficiency above 3500 fill, very bad efficiency at those 4500 fills!). Using the stock spring you will get valve lock filling more than approximately (it varies) 3100 / 3200.

Then do your own moderator.

FYI - I'm in the US but used 17mm-1.0 threads on the muzzle of my .457 Texan as it left the thickest barrel under the threads. Cheap Chinese CF tube available so I have a 40mm x 8"/200mm baffle chamber in front of the muzzle and the tube extends back to the front of the rifle frame, with an adapter that fits there. The muzzle nut is secured inside the tube and vents back into the space between the muzzle nut and the frame adapter. Not backyard friendly quiet but noise is greatly reduced and is hard to make out that a shot occured 50 feet away.

Just went and measured the full 40mm OD tube length and it's 429mm.

That's too subjective a question to answer for you. All I can say is it's not worth it TO ME.

Check the AirForce website. I you check the Outlet Store they have blemished LSS's for $1067.00 every now and again. There was a .45 last night that is gone today so you have to be quick.

I just got a LSS in the .357 caliber and honestly I kinda regret not going with the regular texan and getting a moderator elsewhere. The gun is just so damn long. From videos it seems like the ones available are quieter than the stock LSS.