Rugged 3-Lug Mount

RUGGED OBSIDIAN 3-LUG MOUNTS - INSTANT ATTACH/DETACH FOR YOUR OBSIDIAN SUPPRESSOR

Rugged's 3-Lug Mounts replace the standard piston assembly in your Obsidian 9 or Obsidian 45, converting it to a fast-attach quick-detach system for any 3-lug-equipped fixed-barrel host. Two versions are available: the 9mm 3-Lug Mount (OA001) built to standard 9mm 3-lug specs, and the 45 ACP 3-Lug Mount (OA007) engineered to B&T's oversized 45-caliber 3-lug specification. Both mounts replace the retaining cap, piston, and spring for a complete conversion with no tools required. The positive-locking twist-on interface lets you move your Obsidian between hosts in seconds, making it the preferred mounting solution for shooters running multiple pistol-caliber carbines, subguns, or fixed-barrel platforms in a single range session.

CAPITOL ARMORY'S OPINION

The 3-lug interface doesn't get as much attention as QD systems built around rifle suppressors, but for pistol-caliber carbines and subguns, it is the fastest option available. If you run an MP5-pattern host, a Stribog, or any AR-9 with a standard 9mm 3-lug adapter, the OA001 is a straightforward upgrade that makes your Obsidian significantly more versatile without adding complexity. Put it on, shoot, pull it off, move to the next host. 

The OA007 serves a narrower audience, specifically shooters running B&T APC45-pattern hosts that use the oversized 45-caliber 3-lug specification. It is not a universal 45 ACP mount and will not interface with standard 9mm 3-lug adapters. If you are unsure which spec your host uses, verify before ordering. The correct answer is almost always the OA001 unless you are specifically running hardware with B&T's 45 cal specs. 

FEATURES

• Replaces retaining cap, piston, and spring for a complete 3-lug conversion
• Positive-locking twist-on attachment for fast, repeatable mounting
• 9mm mount (OA001) fits both the Obsidian 9 and Obsidian 45
• 45 mount (OA007) built to B&T 45-caliber 3-lug specification
• Machined from hardened steel for long-term durability under sustained fire
• For use with fixed-barrel firearms only
• No tools required

WHAT'S INCLUDED

• 3-Lug Mount (OA001 or OA007, per model selected)

COMPATIBILITY

• Rugged Obsidian 9
• Rugged Obsidian 45
• 9mm 3-Lug Barrel Adapters (OA001 only)
• Any "Alpha" pattern silencer (Omega 9K, Fly 9, Flow 9K, and more)

AVAILABLE MODELS

• OA001 - 9mm 3-Lug Mount (standard 9mm 3-lug specification)
• OA007 - 45 ACP 3-Lug Mount (B&T 45-caliber 3-lug specification)

PAIRING NOTES

The Rugged 3-Lug Mount is the natural companion for MP5-pattern builds, such as the Century Arms AP5, PTR 9C, or HK SP5.  Pair it with a Rugged 3-Lug Adapter or SilencerCo 3-lug barrel adapter, and your silencer installs with zero hassle. Running a Stribog, APC9, or AR-9? The 3-Lug system lets you move from one host to another in seconds. For B&T APC45 shooters, the 45 caliber model gives you the same fast-attach experience, sized correctly for the larger 45-caliber lug pattern.