The SilencerCo 9/16×24 Piston is a threaded suppressor adapter built to match host firearms chambered in .40 S&W that feature 9/16×24 TPI threads. As part of the suppressor’s Nielsen device system, this piston allows proper function in semi-automatic handguns by temporarily decoupling the suppressor from the barrel during firing, enabling reliable cycling.
This piston is made from heat-treated 17-4 stainless steel, providing excellent corrosion resistance and long-term durability under repeated use. Whether you’re running an Osprey or Octane suppressor, the 9/16×24 piston ensures a solid, secure fit and consistent performance. Swap pistons easily when moving suppressors between hosts with different thread pitches.
Product Specs:
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Product Name: SilencerCo 9/16×24 Piston
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Part Number: AC31
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Thread Pitch: 9/16×24 TPI
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Material: 17-4 stainless steel
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Suppressor Compatibility: Osprey series, Octane series
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Caliber Compatibility: .40 S&W
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Function: Works with Nielsen device for semi-auto pistols
Key Features:
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Enables suppressor use on .40 S&W barrels threaded 9/16×24
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Durable 17-4 stainless steel construction
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Compatible with SilencerCo Osprey and Octane suppressors
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Designed for use with the Nielsen device for proper cycling
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Easily swapped to match different host firearms
FAQs:
Q: Is this piston only for .40 S&W barrels?
A: Yes, 9/16×24 is commonly used on .40 S&W threaded barrels. Always check your barrel’s thread pitch for compatibility.
Q: Can I use this with a fixed-barrel firearm?
A: You’ll need a fixed barrel spacer if you’re using it on a non-reciprocating platform to ensure safe function.
Q: Does this piston work with other suppressor models?
A: It is specifically engineered for SilencerCo’s Osprey and Octane suppressors.
Q: Is it easy to install?
A: Yes, the piston simply threads into the suppressor’s booster assembly and can be swapped quickly.
Q: What makes this piston durable?
A: It’s made from 17-4 stainless steel, heat-treated for high strength and corrosion resistance.
Brought to you by Black Bayou Armory.
