SF10 Small Frame .338 Federal


Common Use:  Hunting

The SF-10 is a compact, lighter, and more dynamic version of the AR10.

The .338 Federal is a rifle cartridge based on the .308 Winchester case necked up to .33 Caliber.  It was created by Federal Cartridge and Sako in 2006 and intended as a big game cartridge with a reasonable recoil for lightweight rifles.  The .338 Federal provides the energy of a 7mm Remington Magnum.

Recommended Load(s): TBD

When ordering, please let us know in the order notes section while checking out, your preference for the following barrel specs:

  • Twist Rate (Recommended: 12T)
  • Gas Length (Recommended: Rifle)

** If you are interested in a different trigger, stock, muzzle device, etc. please give us a call and we will build out the rifle and send the invoice directly.

Lead times are typically 8-10 weeks, please call (240-808-2314) or email (info@f4defense.com) with any questions.




Technical Specs

  • Receivers: Precision CNC Machined from Aerospace Aluminum Billet 7075-T6
  • Caliber: .338 Federal
  • Barrel: Bartlein Match Grade Stainless Steel – Fluted
  • Fire Control Group: Trigger Tech® Adaptable AR Primary Trigger (2 stage)
  • Handguard: 15.5″ Adaptive Rail System
  • Selector: Radian Talon Short-throw Ambi Selector
  • Charging Handle: Radian Raptor (AMBI)
  • BCG: F4 Defense Small Frame Bolt Carrier Group (DLC)
  • Muzzle Device: Seekins Precision ATC
  • Stock: XLR Industries TAC-Lite Precision Buttstock or Magpul MOE SL
  • Gas System: Superlative Arms Adjustable Gas Block
  • Finish:  Type III Class II Anodized Black or Cerakote (Invoiced Separately)
  • Weight: 7.15lbs +


Additional information

Weight 10 lbs
Dimensions 42 × 15 × 5 in
Barrel Length

20 Inches, 18 Inches

Barrel Profile

SPR, Standard


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Magpul MOE SL, XLR Industries TAC-Lite Precision Buttstock (Fully Adjustable)


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