Check out the graphic below.

The SUB-2000 Gen 2 stock is adjustable between 3 different positions to add or subtract 5/8” between each setting. It comes with a threaded barrel for a flash hider or suppressor with 1/2” - 28 threads (9mm) or 9/16”- 24 threads (40cal).

The Gen 2 handguard has two integrated picatinny rails and five mounting M-LOK slots per side, as well as KEL TEC’s improved "Gator Grip" texture throughout.