APA Fat Tuna Gen 2 Tru-Loc Scope Rings and M18x1 Thread Pattern with

and M18x1 Thread Pattern with more to come

While some may say that the weight is impractical

It is compatible with the FR1 Fire Control Mount (diving board) as well as the FR1 Red Dot Mounts

They all have a latch that comes in from the side

APA Fat Tuna Gen 2 Tru-Loc Scope Rings and M18x1 Thread Pattern withIncrease Accuracy Tune Factory Loads Reduce Blast and Concussion Accuracy Tuner The APA Fat Tuna is a product of a partnership between APA and Adaptive Tuning Systems (ATS). This tuning device attaches directly to the APA Fat Bastard. Simply replace your existing jam nut with the Tuna nut and youre ready to start finding the node your ammo wants. Whether your barrel is speeding up post break in or temperature swings have influenced your load at a