SILENCERCO AC2603 3-LUG MUZZLE DEVICE 45 ACP 5/8X24

The SilencerCo 3-Lug Muzzle Device (AC2603) is a factory direct quick-attach suppressor adapter for .45 ACP pistols and pistol-caliber carbines with 5/8x24 threaded barrels, built to pair with the SilencerCo proprietary 45 ACP 3-lug mount. This HK-pattern .45 ACP suppressor muzzle adapter lets fixed-barrel host guns run compatible SilencerCo cans with one-handed, tool-free attachment and detachment.

Key Features

• Part Number: AC2603
• Caliber: .45 ACP
• Thread Pitch: 5/8x24
• Design: 3-lug quick-attach muzzle device
• Material: Steel
• Finish: Black
• UPC: 816413025161
• Required Accessory: SilencerCo 45 ACP 3-Lug Mount (sold separately)
• Compatible Suppressors: Octane Series, Omega K Series, Hybrid 46 (Bravo Piston Mount required), Hybrid 46M (Charlie Piston Mount required), Omega 36M (Charlie Piston Mount required)

Special Features

• The 3-lug design follows the HK-pattern quick-attach standard, allowing the suppressor to lock on and release with a simple quarter-turn rotation, eliminating the thread timing and cross-threading concerns that come with standard threaded muzzle devices.
• This muzzle device is engineered specifically for fixed-barrel host guns such as pistol-caliber carbines and some semi-automatic pistol platforms, where a piston or direct-thread suppressor mount is not practical.
• SilencerCo specifies that .45 ACP 3-lug muzzle devices must be used exclusively with the 45 ACP 3-lug mount, keeping the bore alignment and locking interface caliber-correct and mechanically sound.
• The steel construction and black finish match the durability standards of the suppressors this device is designed to support, holding up to repeated attachment cycles without wearing the lug interfaces.
• The 5/8x24 thread pitch covers a broad range of .45 ACP threaded hosts including popular pistol-caliber carbines and threaded pistol barrels built to this common large-bore thread specification.

Practical Benefits

• The 3-lug quick-attach design means you can mount or remove your suppressor in the field or at the range in one motion without a wrench, timing tool, or alignment marks.
• Fixed-barrel platform owners who previously could not run a direct-thread or piston-style suppressor mount now have a purpose-built adapter that integrates cleanly with their host gun.
• The AC2603 works across multiple SilencerCo suppressor families, so if you already own an Octane or Omega K Series can, this muzzle device brings that suppressor to your .45 ACP threaded host without buying a new silencer.
• Pistol-caliber carbine shooters running .45 ACP builds will find this device a direct, no-gunsmith solution for adding suppressor capability to a fixed-barrel platform.
• If you are building a suppressed .45 ACP host or upgrading an existing threaded barrel setup, the SilencerCo 3-Lug Muzzle Device (AC2603) is a capable tool that bridges your fixed-barrel platform to the full SilencerCo suppressor ecosystem.

The SilencerCo 3-Lug Muzzle Device (AC2603) in .45 ACP is a reliable pick for the fixed-barrel pistol or carbine owner who wants fast, repeatable suppressor attachment without the limitations of standard threaded mounts.