SilencerCo 3-Lug Barrel Adapter

SILENCERCO 3-LUG MUZZLE DEVICE. HK-PATTERN BARREL ADAPTER FOR QUICK-ATTACH SUPPRESSOR MOUNTING

SilencerCo's 3-Lug Muzzle Devices thread onto your barrel and provide an HK-pattern 3-lug interface for quick suppressor attachment and detachment. Available in 9mm and .45 ACP configurations across seven thread pitches, these muzzle devices are compatible with industry-standard 3-lug mounts including both the original SilencerCo 3-Lug Mount and the newer SilencerCo Low Profile 3-Lug Mount. Select the correct thread pitch and caliber for your host from the model table below. 3-Lug mounting is only compatible with fixed-barrel firearms.

CAPITOL ARMORY'S OPINION

If you're running a pistol-caliber host with a fixed barrel and want quick-detach suppressor capability, a 3-lug adapter is one of the most popular solutions. One thing worth knowing: 9mm and .45 3-lug systems are not cross-compatible, so make sure your muzzle device and mount are matched in caliber before ordering.

FEATURES

• HK-pattern 3-lug interface for quick suppressor attachment and detachment
• Threads onto existing barrel threading with no permanent modification required
• 5/8x24 variants include wrench flats for ease of installation
• Available in 9 and 45 configurations
• Seven thread pitch options covering standard and metric patterns
• 1/2x28 9mm (AC2604): 1.4" overall length, adds approximately 0.8" to barrel
• 5/8x24 9mm (AC2609) and 5/8x24 .45 ACP (AC2603): 2.3" overall length, adds approximately 1.9" to barrel

AVAILABLE MODELS

COMPATIBILITY

• Compatible with the SilencerCo Low Profile 3-Lug Mount
• 9mm muzzle devices are compatible with all industry-standard 9mm 3-lug mounts
• .45 ACP muzzle devices are compatible with .45-sized 3-lug mounts only
• The 5/8x24 and 9/16x24 variants are designed around the B&T APC45 3-lug barrel and may not be compatible with non-standard .45 3-lug mounts
• Important: 9mm and .45 3-lug systems are not cross-compatible