F Hera Arms AR-15 LC Linear Compensator - 1/2-28 $119.00 11.04.09 show more like this $8.99 Flat Rate Dirty Bird Industries F HERA USA AR-15 .223/5.56 Linear Compensator Gen 2 1/2x28 Thread Steel Black $119.40 11-04-09 show more like this $10 Flat for Firearms Cheaper Than Dirt