Name: SilencerCo Delta Adapter Walther P22 1/2x28 Thread Converter - AC5
Brand: SilencerCo
SKU: AC5
Price: 37.4 USD
Availability: InStock

SilencerCo Delta Adapter Walther P22 1/2x28 Thread Converter - AC5

MSRP: $42.00

$37.40

( saved $4.60 )

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Product Description

SilencerCo® Delta Series Rimfire Thread Adapter – Walther® P22 to 1/2x28 – AC5

The SilencerCo® Delta Series Rimfire Thread Adapter (AC5) is a precision-engineered muzzle conversion interface designed to render factory metric-threaded rimfire pistols instantly ready for modern suppressors. Standard Walther® P22 barrels, along with several full-size Smith & Wesson® M&P® 22 variants and similar clone patterns, feature a recessed, female metric M8x0.75 thread configuration that cannot natively accept standard American muzzle accessories. The AC5 adapter (817272010107) effortlessly translates this metric pitch into the universal 1/2x28 TPI (Threads Per Inch) standard, expanding your host pistol's compatibility to almost every major rimfire silencer on the market.

Machined from a single solid piece of heat-treated, high-tensile stainless steel and finished in a sleek, non-reflective matte black oxide, the SilencerCo Delta Adapter is built to endure intense rimfire firing cycles without warping or backing off. The engineering hallmark of the AC5 architecture is its integrated O-ring engagement system. Unlike basic, low-tier thread bushings that rely on raw thread-on-thread friction—often resulting in accuracy-destroying baffle strikes if the silencer vibrates loose—SilencerCo's relief-cut O-ring seat grips the internal register of the suppressor securely. This creates a high-friction, tensioned gas seal that prevents the silencer from unthreading under sustained firing strings while actively blocking gritty carbon fouling, lead vapors, and unburnt powder from vaporizing into the host barrel's structural threads. Complete with a knurled steel thread protector featuring its own independent O-ring alignment surface, this turnkey accessory protects your muzzle investment whenever you are running unsuppressed at the range.

Includes: (1) SilencerCo Delta Adapter M8x0.75 to 1/2x28 (Walther P22 Pattern), (1) Knurled Steel Thread Protector, and (1) High-Heat Viton O-Ring (Pre-Installed).

*Compatibility Note: This adapter features an M8x0.75 male internal thread pitch converting to a 1/2x28 male external thread pitch. It is explicitly compatible with the Walther® P22, Walther PPQ M2 .22LR, full-size Smith & Wesson® M&P 22 (excluding the M&P 22 Compact, which requires the AC875 adapter), and Walther Colt 1911-22 variants. Perfectly matches the SilencerCo Switchback® 22, Sparrow® 22, Spectre™ 22, Warlock™ II, and Osprey® Micro, as well as any alternative 1/2x28 rimfire silencer.

Key Features

Universal 1/2x28 Thread Conversion: Converts restrictive metric M8x0.75 factory pistol threads into the universal standard required for American suppressors and muzzle brakes.
Patented O-Ring Engagement: Advanced rubber O-ring shoulder creates consistent back-pressure tension to ensure your suppressor stays concentric and firmly locked in place.
Blocks Gritty Carbon Fouling: The O-ring gas seal seals off the thread channel, preventing vaporized carbon and lead from baking onto and freezing your muzzle joints.
Premium Hardened Stainless Steel: Monolithic steel core eliminates the risk of cross-threading, thread stripping, or bore distortion over thousands of attachment cycles.
Knurled Outer Thread Protector: Includes a matching steel thread cap with an integrated O-ring seat to preserve muzzle crown integrity during unsuppressed transport.
Maintains Bore Concentricity: Precision parallel-ground shoulders guarantee flawless alignment with the pistol's bore axis, mitigating accuracy degradation and dangerous baffle clips.