I have the Trubor T1 comp with a Berreta style cut up front and the rear sight cut out. It weighs 10.5 oz(like on GANSGUNS web page). I added 3 x .125" holes to the barrel and it is flat shooting with 9.3 HS6 and 115 RMR FMJ x 1.175". Without the mods the dot jumped up and down a lot, now it just sits still and you can call your shots all day.