X01 Personal Defense Weapon Platform [GEN-2]


***Firearm not included. Compatible with full size, compact, carry, tacops, X-Carry, or X-Five Sig Sauer® P320® and P250® firearms chambered in 9mm, .40, or .357 SIG®

The X01 (Exo One) Exoskeleton is a drop-in PDW upgrade for the Sig Sauer® P320® series of firearms that provides enhanced capabilities such as the ability to attach an SB Tactical™ arm brace or buttstock, such as those compatible with the SIG® MCX series (optional add-on).

The X01 enhances the original firearm’s manual of arms with its integrated charging handle, which provides an “HK®-style” downward release when locked to the rear. The fore-end of the weapon features M-Lok® slots, two of which come standard with specially designed handstops that integrate with the grip module’s contours.

Made in U.S.A.

  • Please allow 14 days for additional modifications
  • Compact slide required for SRD9 // muzzle device mod
  • Manual safety modification enables compatibility with a P320 featuring a manual safety
SKU: 0001 Category: Product ID: 1217


Product Details



  • Requires Sig Sauer® P320® or P250® slide assembly, magazine release, and FCU
  • Compatible with full size, carry, tacops, x-carry, or compact P320® or P250 slides chambered in 9mm, .40, or .357 SIG®. X-5 compatible on request (see options).
  • Milspec 1913 picatinny optic rail
  • Rear vertical 1913 picatinny rail for arm brace, buttstock, or sling mounts
  • Integrated ambidextrous slide-lock charging handle assembly
  • Rear dual QD Sling mounts
  •  Three (3) fore-end M-Lok® accessory slots
  • Dual proprietary handstops
  • Muzzle compatible with SRD9 Suppressors when requested (more models to be tested soon) when a compact slide is paired with a full-size threaded barrel (Silencerco® model recommended)
  • Glass-filled nylon & stainless steel construction
  • Transformation happens in moments and is fully reversible

International Traffic in Arms Regulations Controlled Product



X01 PDW:

  • Weight: 12oz
  • Weight, w/ arm brace (optional): 24oz
  • Minimum operating length: 16in
  • 9x3x12in

* Currently only compatible with full size, compact, carry, or X-Five slides.

Optional Upgrades

Related Info

WARNING: Observe safe firearm handling practices at all times. Failure to do so may result in serious bodily injury or death. Fire Control Unit shall not be responsible for injury, death, or property damage resulting from faulty installation, misuse, illegal use, or modification of this product.

EXPORT NOTICE: This is an item controlled for export by the International Traffic in Arms Regulations (ITAR). These controls take the form of export regulations and license requirements.

As part of the express consideration provided for receipt of Fire Control Unit’s goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by Fire Control Unit in violation of U.S. law is prohibited. Customers acquiring ITAR goods, technical data and/or services from Fire Control Unit shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws.


Additional information

Weight 4 lbs
Dimensions 18 x 9 x 3 in
Intended Slide Size

Compact / Carry, Full Size, X-Five (+$50)

SRD9 Suppressor Compatible

No, Yes (+$50)

SB-Tactical Arm Brace with FCU Enhanced Vertical 1913 Adapter

No, Yes (+$200)

For M17 / manual safety P320

No, Yes (+$50)