Very interesting but look like Capybara !
https://www.youtube.com/watch?v=orJpblOU3O4
"...Adjustable regulator pull the stock off you can crank it up and down..." "...can change to different caliber..."
https://www.youtube.com/watch?v=orJpblOU3O4
"...Adjustable regulator pull the stock off you can crank it up and down..." "...can change to different caliber..."