Tyrant CNC just dropped a new aftermarket upgrade for the SIG Sauer P365 platform: the Tyrant Weapon System 365 (TWS 365). This purpose-built PDW-style chassis turns your everyday carry pistol into a compact Personal Defense Weapon (PDW) platform without sacrificing the concealability that made the P365 famous.
Tyrant CNC T.W.S. 365 PDW System
The TWS 365 from Tyrant CNC is a modular weapon system that converts a standard SIG Sauer P365 pistol into a stable PDW chassis. Designed for versatility and real-world performance, this system blends rugged CNC-machined aluminum with ergonomic polymer components.
Despite all the added capability, the TWS 365 maintains a lightweight footprint (approximately 10.7 oz unloaded) and compact handling — perfect for both defensive use and dynamic range applications.
- Removable Aluminum Blast Shield with Bottom Picatinny – Controls muzzle blast and provides accessory space for lights, lasers, or more.
- Spring-Loaded Side-Folding Brace (Patent Pending) – Self-actuated and precision-milled from aluminum, it deploys instantly with rear button actuation and folds flush when stowed. The brace can be activated by depressing the rear-mounted lever with your thumb or the top of the hand when grabbing the TWS.
- Removable Magazine Holder with Ambidextrous Release – Dual-magazine system allows faster reloads with AR-15 style controls. Designed for primary-hand operation: thumb for the pistol grip mag, index finger for the magazine holder release, or both for a dual drop. Carry’s 2 XMacro/Fuse magazines for a total of up to 50 rounds of ammunition on system.
- Rear-Mounted Picatinny Rail – Ready for the brace or future expansions.
- Hybrid Chassis Construction (Patent Pending) – Aluminum receiver for strength, polymer grip and magazine holder for comfort and weight reduction.
- Tool Steel & Stainless Components – Self-captured pins, annealed springs, and interlocking geometry ensure reliability and endurance under extreme use.
Compatibility and Design
The TWS 365 is engineered to work with nearly all SIG P365 models, including compensated or suppressed setups. The system only accepts SIG’s XMacro-style magazines, giving shooters the flexibility to carry more rounds without external mag holders. Models with external safeties will require modifications, but will work according to Tyrant’s website.
Where to Buy & Pricing
Live Inventory Price Checker
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Tws365 Conversion System Sig Sauer P365 To Pdw - Tws For P365 Arsenal Gray | Brownells.com | $ 539.95 |
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The Tyrant TWS 365 PDW System is now available directly from Tyrant CNC’s online store and through a variety of authorized retailers.
It’s important to note: the TWS 365 is a chassis system, not a firearm by itself, meaning it can ship directly to most buyers without FFL transfer.
The SIG P365 revolutionized concealed carry when it launched, packing surprising capacity into a micro-compact frame. With the TWS 365, Tyrant CNC lets shooters expand that platform into a PDW-style setup — giving improved stability, accessory options, and on-board magazine capacity without losing the DNA of the original pistol.
NFA?
Color me skeptical, but how does all this extra stuff not alter the concealability of the Sig? Who makes a holster?
It looks futuristic that’s for sure.