Silencerco 17-4 Stainless Steel Piston for .40 S&W Handguns, 9/16-24 - AC31
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Overview
The SilencerCo 17-4 Stainless Steel Piston is designed specifically for .40 S&W handguns, providing a durable and reliable means of attaching a suppressor to your firearm. With a thread pitch of 9/16x24, it ensures a secure fit, allowing for effective sound reduction and improved shooting experience. This piston is commonly found in builds focused on enhanced suppressor compatibility and noise reduction for tactical and competitive shooting applications.
Specifications
Silencerco 17-4 Stainless Steel Piston for .40 S&W Handguns, 9/16-24 - AC31
Available Merchants(7)
Prices checked
Price Alert
Price and stock
Availability is good for the Silencerco 17-4 Stainless Steel Piston for .40 S&W Handguns, 9/16-24 - AC31: it was in stock at one retailer or another nearly every day in September 2026, and today 6 of the 7 retailers we track have it in stock. The best price drifted down from $72.99 to $63.76 over September 2026 without a real sale. Buying today, the lowest price is $72.99 at Ammunition Depot, above September's low of $63.76, so a better deal may come back.
Prices checked · refreshed daily across 37 retailers
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