AR-15 .223/5.56 A2 flash hider 1/2-28 threads, bird cage style. This A2 Flash Hider provides excellent flash suppression from the muzzle and features a flat sided base for easy installation. 

A2 Bird Cage Style
Mil-Spec .223/5.56 
Threaded 1/2x28 TPI 
Steel 
Black , parkerized finish
Length 1.8" 
Width 0.9" 
Weight 2.1 oz 

Requires crush washer for proper indexing (included)