Want to sell my SureFire Closed Tine Flash Hider that I took off my Gieselle Super duty AR-15. My suppressors are all Dead air mounts and I swapped it out. Only had about 20 rounds through it to check functionality of the gun when I bought it. Want to trade for a 30 muzzle brake like an MPA or Hawkins Tank with 5/8 thread or whatever you may have or sell for $120. Thanks