A quick overview of the Alpha, Bravo, and Charlie silencer compatibility.
SilencerCo Mounting Systems: Alpha vs Bravo vs Charlie Explained
Understanding SilencerCo's three mounting patterns is crucial for selecting compatible suppressors, mounts, and accessories. This guide covers everything you need to know about Alpha, Bravo (HUB), and Charlie thread patterns.
Quick Reference:
- Alpha (1.125x28): Pistol suppressors and PCCs
- Bravo/HUB (1.375x24): Universal rifle standard
- Charlie: SilencerCo proprietary heavy-duty
Alpha Thread Pattern (1.125x28)
The Alpha pattern is SilencerCo's standard for pistol-caliber suppressors. This thread pattern accepts pistons, fixed barrel spacers, and 3-lug mounts, making it ideal for handguns and pistol caliber carbines.
Alpha-Compatible Suppressors
SilencerCo Models:
- Octane 9 / Octane 45
- Omega 9K / Omega 45K
- Harvester 300 (discontinued)
Compatible Brands:
- Rugged: Obsidian 9, Obsidian 45
- HUXWRX: Rad 9, Cash 9K, Rad 45, Flow 9K Ti, Flow Range 36 Ti (with booster housing)
Alpha Mounting Options
- Pistons: For tilting-barrel semi-auto pistols
- Fixed Barrel Spacers: For fixed-barrel hosts like PCCs
- 3-Lug Mounts: Quick-attach for MP5-pattern hosts
- Direct Thread Adapters: For permanent or semi-permanent attachment
Bravo / HUB Thread Pattern (1.375x24)
The industry-standard HUB (Hybrid Universal Mount) pattern, also known as Bravo, has become the most widely adopted mounting system. Originally developed by SilencerCo, it's now used by dozens of manufacturers.
Why HUB Dominates the Market
- Universal compatibility across brands
- Extensive third-party mount options
- Supports both QD and direct-thread systems
- Future-proof with industry adoption
HUB-Compatible Suppressors
Major Manufacturers:
- SilencerCo: Omega 300, Hybrid 46, Harvester Evo, Scythe-Ti, Scythe-STM
- Dead Air: Nomad series, Sandman-X, Primal, Sierra 5
- HUXWRX: Ventum 556/762, Range 36 Ti, Flow 9K
- Rugged: Alaskan 360/Ti, Surge-X
- YHM: Resonator, Turbo, Fat Cat
- Energetic Armament: Vox series, Peak 30, Lux
Also compatible: Aero Precision, Otter Creek Labs, Thunder Beast, Diligent Defense, PTR, Resilient, Liberty Precision, CAT, Radical Defense
Popular HUB Mount Systems
- SilencerCo ASR: Original quick-detach system
- Dead Air KeyMo: No-shim timing system
- Q Plan-B: Taper mount design
- YHM Kurz: Budget-friendly QD option
- Direct Thread: Various pitches available
Charlie Thread Pattern (Proprietary)
SilencerCo's Charlie pattern is exclusive to their heavy-duty rifle suppressors. Designed for extreme use including full-auto fire, Charlie offers the most robust mounting options.
Charlie-Compatible Suppressors
- Omega 36M
- Hybrid 46M
- Saker 556 / Saker 762
- Chimera 300
- Velos LBP 556 / 762
Charlie Mount Compatibility
- Native: SilencerCo ASR, Direct Thread
- Adapters Available: Dead Air KeyMo, Q Plan-B, Griffin Taper
- Legacy: Trifecta mount system
Choosing the Right Pattern
Decision Guide:
- Choose Alpha if: You need a dedicated pistol/PCC suppressor
- Choose Bravo/HUB if: You want maximum compatibility and mount options
- Choose Charlie if: You need extreme durability for high-volume shooting
Mount Interchangeability Tips
- Alpha and Bravo threads are NOT interchangeable
- Charlie requires specific adapters for non-SilencerCo mounts
- Always verify thread pitch before purchasing mounts
- Some suppressors (like Omega 36M) can accept multiple patterns with adapters
Future-Proofing Your Purchase
The HUB/Bravo pattern offers the best long-term flexibility. With widespread industry adoption, you'll have access to new mounting solutions as they're developed. However, SilencerCo's Alpha and Charlie patterns excel in their specific applications.
Pro Tip: When building a suppressor collection, consider standardizing on one mounting system across your rifles. This allows you to share suppressors between hosts without changing mounts.
Need Help Choosing?
Capitol Armory's experts can guide you through mounting options and compatibility. We stock mounts for all three patterns.
Contact Our Experts →