ASE UTRA Borelock Collar for Lantac Dragon Brakes.

This adapter collar is intended for use with a Lantac DGN556B Dragon Muzzle Brake and will allow either of the following ASE UTRA suppressors to be QD mounted to the muzzle device:
5.56/.223 Jet-Z CQB-S
5.56/.223 Jet-Z CQB
It can also be used with the DGN762B Dragon Muzzle Brake for QD attachment to the following ASE UTRA 30 Cal suppressors:
7.62/.308 Jet-Z Compact
We also recomend the use of timing shims & Rocksett thread locker that are sold seperately.