Glock 19 gen 4 

trinity Nevada ground breaker complete upper. Features a built-in slant compensator and porting without requiring a threaded barrel.Engineered with deep slide cuts and a reduced reciprocating mass (roughly 25% lighter slide mass) to speed up follow-up shots. It is cut for RmR footprint. 

Trinity slide - 1,400$ 

Glock 19 gen 4 lower - 350$

Holosun HS507COMP 350$

olight Valkyrie turbo - 100$ 

comes with 2 mags

asking 2k cash for the whole set up or 2,200$ in trade wise. Can also throw in the og Glock slide for extra 200$ cash or total of 2,500$ trade value. No Lowballs will be ignored and blocked. This isn't for ppl that don't have money or guns to trade. These slides are hard to find and they shoot very accurate the whole look can be more aggressive as well.