SilencerCo Osprey/Octane Piston - 1/2x28 SN

SilencerCo Osprey/Octane Piston - 1/2x28 SN

The SilencerCo 1/2×28 SN Piston is engineered for shooters who need reliable suppressor function across multiple host firearms—especially compact pistols with small‑profile barrels. Built from heat‑treated 17‑4 stainless steel, this piston delivers exceptional strength, corrosion resistance, and long‑term durability. As part of a Nielson device (booster), it enables proper semi‑automatic cycling by allowing the barrel to unlock smoothly when shooting suppressed.Designed to be easily swapped between calibers or platforms, this piston features female threading that interfaces directly with SilencerCo threaded barrels. The SN (soft‑shoulder) variant indexes on the muzzle rather than the barrel shoulder, making it ideal for pistols like the Glock 43, M&P Shield, Sig 938, and others with insufficient shoulder diameter. Compatible with a wide range of SilencerCo suppressors, it’s a versatile, high‑performance mounting solution for shooters who demand reliability and precision.

Heat‑Treated 17‑4 Stainless Steel
Provides exceptional strength, corrosion resistance, and long service life.

Soft‑Shoulder Indexing
SN design indexes on the muzzle for barrels with inadequate shoulder diameter.

Wide Suppressor Compatibility
Works with multiple SilencerCo platforms for maximum versatility.

Ideal for Slim Pistols
Fits Glock 43, M&P Shield, Sig 938, and similar compact firearms.

Specifications

• Thread Pattern: 1/2×28 SN
• Material: 17‑4 stainless steel
• Heat Treatment: Yes
• Finish: Black
• Indexing Method: Muzzle‑indexed (soft‑shoulder compatible)
• Compatibility:
  • Omega K Series
  • Hybrid 46
  • Hybrid 46M (with Charlie piston mount)
  • Osprey Series
  • Octane Series
  • Omega 36M (with Charlie piston mount)
  • Spectre Series
• Firearm Fitment: Glock 43, M&P Shield, Sig 938, and other pistols with small‑diameter barrel shoulders