Police trade in glocks/ aero precision ar10 lowers. Both $250

[MarkItZero]

https://www.aeroprecisionusa.com/m5-complete-lower-receiver-moe-grip-fixed-rifle-stock (note this price is for the black and tan models only)

https://www.jgsales.com/glock-22-40s-w-gen-4-semi-auto-pistol,-black,-police-trade-in,-vg,-used.-p-108742.html