The Rugged Fixed Mount .578×28 is a stand-alone mounting accessory from Rugged Suppressors for carbine and subgun platforms that have fixed barrels (brand part no. OF007). On the Obsidian45 and Obsidian9 it replaces the booster system, which is the part a fixed-barrel host does not need the way a recoiling handgun does. This version is cut for .578×28 barrel threads, and Rugged sells the Fixed Mount in other thread pitches, so the thread is the detail to match to your barrel. Rugged states the Fixed Mount is not used with the 3 Lug Mount or the Fixed Barrel Spacer, so it is chosen in place of those two parts.

Key Specifications

• Barrel thread is .578×28, the pitch this version of the mount is cut for.
• It is built for carbine and subgun platforms with fixed barrels, the hosts Rugged designed the Fixed Mount around.
• It is a stand-alone mounting accessory, as Rugged describes it, so it is used on its own.
• It replaces the booster system in the Obsidian45 and Obsidian9, the piece a fixed-barrel setup swaps out.
• It fits both the Obsidian45 and Obsidian9, because Rugged lists its Fixed Mounts as interchangeable between the two models.
• It is not used with the 3 Lug Mount or the Fixed Barrel Spacer, which keeps the host to one mounting method.

Frequently Asked Questions

Which barrel thread does the Rugged Fixed Mount .578×28 fit? This version is cut for .578×28. Rugged also makes the Fixed Mount in other thread pitches, so confirm your barrel thread before ordering.

What does the Fixed Mount replace on the Obsidian? It replaces the booster system in the Obsidian45 and Obsidian9 when the suppressor runs on a fixed-barrel carbine or subgun.

Can I use it with the 3 Lug Mount or the Fixed Barrel Spacer? No. Rugged states the Fixed Mount is not used with either one.

Buy the Rugged Fixed Mount .578×28

Match the .578×28 thread to your barrel, set the Obsidian up for a fixed-barrel host and leave the booster out. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more suppressor parts and accessories while you are here.