SJC Compensators

Installation Instructions

Contact S & J Customs first if you do not understand the following instructions. 

  1. It is your responsibility to make sure your pistol or rifle is unloaded and safe before starting.

  2. Please verify that the compensator provided has the same thread diameter and pitch as the threads on your barrel. Since different caliber compensators may use the same thread diameter and pitch, it is also important to verify you are installing a compensator with adequate bore clearance for your caliber.  Measure the bore of the provided compensator and the diameter of your bullets, or simply pass one of your bullets through the entire bore of the compensator before installing.
  3. Please note that the bore diameter of SJC compensators is purposefully tight to assure maximum usage of available gases.  Therefore it is imperative that the barrel threading is aligned with the bore axis.  Poorly aligned threads could allow for possibly dangerous baffle strikes when the bullet is fired through the compensator.

  4. SJC/Lund Titan Rifle Compensators are intended to install after verifying all dimensions with peel, crush washer, or machining the comp shoulder to allow indexing the compensator to your preference.

  5. SJC aluminum compensators used on pistols that do not have a seating shoulder are designed to be attached with high temperature Loctite “272” or like products. Aluminum comp threads gall easily. So, use a lubricant if screwing onto the barrel threads without the Loctite.

  6. After verifying all dimensions and with the pistol barrel still in the slide but removed from the receiver, degrease and dry threads before coating the barrel threads and compensator threads liberally with the 272 Loctite.  Immediately screw the aluminum compensator onto the barrel until there is not space for another complete revolution of the comp without it  contacting the slide when the barrel is in battery.  Align the top of the compensator with the top of the slide.  Make sure no compound is left in the barrel or bore of the compensator. Allow to cure per the Loctite manufacturer’s recommendations before test firing.

  7. To remove a 272 Loctited compensator you need to slowly and evenly heat the threaded area of the compensator using a  propane torch to just above the Loctites maximum holding temperature then unscrew the compensator  while using suitable protection for yourself, the compensator and any other parts in close proximity to the heat. After heating to that range the  compensator should be completely removed, cleaned and degreased before any re-installation is attempted.

  8. Using bullets that have no exposed lead on their base will prevent lead build up in your compensators. Cleaning often and using  compensator lubes will prolong the life of your new SJC compensator.