The SilencerCo Booster Assembly O-Ring Pack is a booster assembly O-ring pack from SilencerCo. SilencerCo machines it (SilencerCo part no. AC88) to factory tolerances rather than as a generic aftermarket stand-in. It replaces the O-rings inside the booster spring assembly that lets a pistol-caliber suppressor’s piston cycle independently of the slide. Booster seals harden and take a set with heavy use, and swapping them out restores smooth piston travel instead of gritty, inconsistent cycling. It is a practical pickup for anyone running a suppressor setup where the small parts matter as much as the can itself.

Key Specifications

• 2 Pack is how many of this part ship in the package, enough to have a spare on hand without a second order.
• Booster spring seal set replaces the wear-prone O-rings inside the recoil booster assembly rather than requiring a full booster replacement.

Frequently Asked Questions

What does this O-ring pack replace? It replaces the seals inside a SilencerCo suppressor’s booster spring assembly, the parts that wear first with repeated cycling.

Is this a genuine manufacturer part? Yes, it is a factory component sourced through an authorized distributor, built to the same spec as the part it replaces.

Buy the SilencerCo Booster Assembly O-Ring Pack

Order the SilencerCo Booster Assembly O-Ring Pack directly from Schaefer Defense and get it moving toward your bench today. Ships fast from our Lubbock, Texas gun shop, direct to your door with no FFL required. Check out the rest of our gunsmithing tools lineup for the other small parts that keep a suppressor setup running right.