The SilencerCo AC88 Booster Assembly O-Ring Pack in Rubber Black delivers a reliable, two-pack solution for replacing the piston retainer cap O-rings on popular SilencerCo suppressor platforms, including Octane, Osprey, Omega K, Hybrid 46, Hybrid 46M, and Omega 36M. Designed to maintain optimal function and seamless cycling when a suppressor is attached, these O-ring replacements help ensure consistent performance across shooting sessions by sealing critical interfaces and preventing leakage or timing inconsistencies that can affect reliability. With a durable finish that matches the black aesthetic of modern suppressors, this booster assembly O-ring pack provides an easy, cost-effective maintenance option for keeping your firearm setup operating as intended. The two-pack format allows for convenient periodic replacements, reducing downtime and helping preserve the integrity of the piston retainer cap over time. Ideal for range enthusiasts and hunters who rely on dependable suppression systems, these O-rings are a practical accessory that integrates smoothly into routine maintenance without requiring alterations to your setup. Trust SilencerCo to deliver precise fit and durable materials that support consistent cycling and reliability across compatible silencers.