The Bowers Versadapt Insert, .578×28 is a Versadapt insert from Bowers Group, the part that threads into a Bowers silencer and changes its thread pitch to match your firearm. This .578×28 version is the thread pitch Bowers lists for the SIG 220 Combat Tactical in .40 and .45 and calls the best 1911 pitch. Bowers makes Versadapt inserts for its Vers series and later silencers, for retrofitted CAC and PAS models, and for the CFFS faux suppressor and its FHB flash hiders and brakes. Because the insert is a separate piece, one silencer can move between host firearms by swapping inserts instead of buying a second silencer. Bowers sells each insert individually, either as a replacement or to add another pitch to a silencer you already own.

Key Specifications

• The thread pitch is .578×28, the version that separates this insert from the other Versadapt pitches.
• Bowers lists it for the SIG 220 Combat Tactical .40/45, a factory-threaded host.
• Bowers calls it the best 1911 pitch, so it is the one to look at for threaded 1911 barrels.
• The index point is the muzzle, as Bowers lists for this insert, which sets where the silencer indexes on the host.
• It is made for Bowers silencers with the AIMS mount, covering the Vers series, later models and retrofitted CAC and PAS silencers.

Frequently Asked Questions

Which firearms is the .578×28 insert for? Bowers lists the .578-28 insert for the SIG 220 Combat Tactical .40/45 and describes it as the best 1911 pitch.

How does a Versadapt insert work? It threads into the Bowers silencer and changes the silencer thread pitch to match the firearm, so one silencer can serve several hosts by swapping inserts.

Buy the Bowers Versadapt Insert, .578×28

Threaded 1911 and SIG 220 barrels share a pitch that most silencer mounts skip, and this insert is built around it. Order it from our Lubbock, Texas gun shop for fast shipping, and browse more suppressor parts and accessories while you are here.