Patternmaster 12ga Shooting Sport Series (SSS) TRAP MID (0.715”) has our patented “Gas over Constriction Technology” utilizing a “Coil Zone” which is made up of a channel inside the tube used to harness gas expelled from the ammunition. “Coil Zone” channels are spun in a negative twist to stabilize for even, consistent patterns and keep the tube tight in the barrel. Anaconda TRAP MID will throw a MODIFIED pattern with distances out to 50 yards. TRAP MID tubes extend out the end of your barrel one inch. The extension is diamond knurled to allow for hand tightening and efficient tube change. It is also marked with three parallel lines through knurling for easy identification. Tubes available in SILVER color only.