PAUTAC P.A.C – Precision Alloy Chassis

The unique modular and ergonomic drop-in chassis system for SAKO TRG 22/42 rifles. The PAC is designed and engineered for heavy duty MIL/LE use and for long-range shooting enthusiasts.


Tuotetunnus (SKU): PAUPAC Osastot: , Avainsanat tuotteelle , , , , , Product ID: 2780


The PAUTAC PAC is a Finnish made modular and ergonomic drop-in chassis system for SAKO TRG 22/42 rifles. The PAUTAC PAC system is designed for military and law enforcement use to upgrade TRG rifle with state of art the features. The chassis system has been developed from input from the nation’s top shooters and military and law enforcement professionals.

The PAUTAC PAC is precision CNC machined from solid billet of 7075 alloy with MIL-A-8625F anodized finish in black. The chassis is easy to install by user and it uses original TRG trigger assembly and magazines.

Chassis incorporates free float M-LOK fore-end and full length monolithic STANAG 4694 NATO Accessory Rail with 20 MOA of inclination for optical and electro-optical devices. Fore-end’s M-LOK mounting system provides surface for M-LOK compatible accessories and rails.

Chassis system is compatible with most AR grips and it includes thumb rests on both sides of the chassis. The butt stock is user adjustable for length of pull, cheek rest height and recoil pad height.

The flush cup QD sling mounts in chassis and multiple M-LOK mounting point in fore-end allowing the operator to select optimum sling location. Also, M-LOK rail mounting point in butt stock enables to attach monopod.


Please contact for more information.

Custom Cerakote colours available, ask by email.

Download PAUTAC PAC data sheet

  • Easy to install with drop-in design for TRG 22/42
  • Over the bold folding stock
  • Fixed stock version available
  • Chassis design to compatible with TRG’s factory trigger assembly and magazines
  • Full length monolithic 20 MOA STANAG 4694 NATO Accessory Rail for optical and electro-optical devices
  • Free float MLOK fore-end and multiple mounting point for M-Lok rails and accessories
  • Compatible with most AR pistol grips
  • MIL-A-8625F anodized finish in black, Cerakote available
  • CNC Machined from solid billet of 7075 alloy
  • Thumb rests on both sides of the chassis
  • Multiple QD sling flush mount socket in buttstock
  • Cheekpiece height adjustable and lockable
  • Buttstock length and height adjustable and lockable
  • Weight
    • TRG 22 6.0kg (13.2lb)
      26” barrel, without accessories
    • TRG 42 6.4kg (14.1lb)
      27” barrel, without accessories
  • Length
    • 1200 mm / 47.24” (unfolded) – 970 mm / 38.18” (folded)
  • Length of Pull (LOP)
    • 340 mm to 370 mm / 13.0” to 14.5”
  • Recoil pad adjustment (A) 
    • 40 mm / 1.6” up and down
  • Cheek Piece height adjustment (B)
    • 25 mm / 1.0”