Yes rail comes off. I have mine configured as a standard upland gun. All chokes included as well as all shims (I am a lefty so this is a nice feature).
Interesting about gas system. I need to try light loads so not sure. I am sure that is adaptable easily.
Tried a lot and always go back to Vias. However, just found Mount Hagen products. Smooth and great coffee cheap. 25 tubes is about $13 on Amazon, Swanson Health, eBay.
Was especially looking for an evening decaf and theirs is awesome. We are coffee snobs and this one is worth a look.
Sent...
Those rodent smoke flares you buy anywhere seem to work well. Probe and find runway, dig open, get it smoking and shove it in runway one in each direction. Cover with a piece of wood.
SOLD>>>>>>>>>>Kuiu 145 zip T in Vias Large. Use with a couple small holes in front and in back. If you aren't super fussy then lots of life left in it. Might as well look like a veteran! Also throwing in an excellent Vias 145 merino neck gaitor face mask. $50 TYD for both