These are complete factory assembled lowers with the upgraded 2 stage match trigger.

Spike's Tactical complete lower half with Rock River 2 stage match trigger, Standard A2 grip and 6 position tactical CAR stock - $275

Rock River LAR-15 complete lower half with 2 stage match trigger, Magpul MOE grip and 6 position Magpul MOE stock - $425

Seller is an FFL, so standard paper work and sales tax will be required.