The SilencerCo AC728 Osprey/Octane Piston Kit 5 Piece Stainless Steel delivers essential compatibility for your Osprey and Octane suppressors, featuring a durable stainless steel construction with a sleek black nitride finish for lasting performance in the field or range. This comprehensive kit includes five pistonscovering .578x28, 1/2"x28, 16mm x 1 LH, 13.5mm x 1 LH, and 9/16"x24to ensure precise fitting across a variety of host firearms and suppressed configurations, paired with three O-ring packs for reliable seal integrity. Designed to expand the versatility of your SilencerCo suppression system, the pistons are engineered to deliver consistent lockup, smooth operation, and dependable longevity under rigorous shooting conditions. Whether youre dialing in suppressor setups for hunting, target practice, or tactical drills, this five-piece kit provides the critical piston options needed to maintain optimal acoustics, gas sealing, and cycling performance without compromising accuracy. SilencerCos commitment to quality ensures a seamless, secure fit and enduring functionality, making this piston kit a practical, value-driven addition to your suppressor maintenance and customization toolkit.