I got the BT Trracer as my first pump , and really love it !
It looks great , works great, and has Autococker threaded barrel , so you have big range of barrels that you can choose.
It has detents , but not detents like in semis , those detents prevent double feeds , but you can prevent rollouts in it by using the stock barrel (Ir;s very snall bore so ball does not roll) , or use barrel kit.
It's first strike useable.
Has picatinny rails on top of the gun , top and bottom of the pump handle , so if you want can apply scop/red dot , flashlight , laser , foregrip , bipod etc.
I got it used for 55quid so it's quite cheap