The Afterburner Flash Hider Tip adds only 1 ounce and 5/8 inch of length to the Afterburner Linear Compensator and dials it in to reduce flash signature. It installs via the internal threads in the Afterburner. The Flash Hider tip is made of 8620 steel heat treated to 50C Rockwell, black oxide coated, and made 100% in the USA. *** DOES NOT INCLUDE AFTERBURNER LINEAR COMPENSATOR SHOWIN IN PICTURES #2 & #3. The Manticore Arms Afterburner Linear Compensator is sold seperately. ***