https://dsarms.com/product/dsa-ar15-3-prong-trident-flashider-1-2x28-closeout-dsa-ar15-3-prong-trident-flashider-1-2x28-closeout/
DSA AR15 3 Prong Trident Flash Hider - 1/2x28 - CLOSEOUT - DSArms
DSA AR15 3 Prong Trident Flash Hider - 1/2x28 - CLOSEOUT Machined from heat treated steel. Black Nitride finish. Threaded 1/2x28. 2" in total length.
dsaprongtridentflashcloseout