Description
Made right here in the USA from 100 percent billet aircraft aluminum and high-strength steel hardware, the Accu-Tac FD-4 is one of those pieces of gear that feels like a tank the moment you pick it up. It was designed with PRS and NRL competition in mind, where you need to drop into position fast and trust that your rifle isn't going anywhere. The fast-deploying legs are the star of the show here, letting you swing from the stowed position out to a full 90 degrees in one quick motion so you're not fumbling on the clock.
What Sets the FD-4 Apart on the Line
Versatility is baked into this thing. You get three individual leg positions (90 degrees, 45 forward, and 45 back) plus five notched height settings, so dialing in the right height for a barricade, a bag, or flat prone is quick and repeatable. Height runs from a low of 5.75 inches with legs kicked out to 45 degrees up to 8.625 inches at full 90-degree stance. The cant capability lets you level the rifle on uneven terrain, and it locks down solid with the quick-detach lever so nothing drifts once you've got your natural point of aim.
Mounting the FD-4 Arca Spec QD Bipod
The Arca clamp is where the QD name earns its keep. It slides onto any standard Arca-Swiss or Arca-style rail and clamps down tight in seconds with no extra tools needed for tightening. That means you can pull it off between stages or throw it in the bag without wrestling with screws. The whole unit wears a Type III MIL-SPEC hard anodized finish in flat black, which holds up to plenty of abuse in the field and looks sharp doing it.
At just over 21 ounces, the FD-4 strikes a nice balance between rock-solid stability and something you won't mind carrying. It works great on bolt guns, precision rifles, rimfire setups like a CZ 457, and airguns too. Folks who've run Harris and Atlas bipods tend to notice the difference in build quality right away, and Accu-Tac backs it all with a limited lifetime warranty.
Key Specifications
- Manufacturer: Accu-Tac
- Model: FD-4
- Manufacturer Part Number: FDQDB-004
- UPC: 858520006176
- Color: Black (Flat Black)
- Finish: Type III MIL-SPEC Hard Anodized
- Material: 6061 T6 Billet Aluminum with High-Strength Steel Hardware
- Mount Type: Arca-Swiss / Arca-Style Rail, Quick-Detach
- Leg Positions: 3 (90 degrees, 45 forward, 45 back)
- Height Settings: 5 notched options
- Height Range: 5.75 in (legs at 45) to 8.625 in (legs at 90)
- Stance Width: 8 in at 45 degrees to 12.25 in at 90 degrees
- Closed Length: 7.5 in
- Closed Width: 3.25 in
- Weight: 21.12 oz
- Made In: USA
What’s Included
- Accu-Tac FD-4 Arca Spec QD Bipod (Black)
- Limited Lifetime Warranty
Frequently Asked Questions
What rifles and rails does the Accu-Tac FD-4 work with?
The FD-4 attaches to any standard Arca-Swiss or Arca-style rail, which covers a huge range of chassis systems, forends, and Arca adapters. It's a great match for bolt-action rifles, precision rigs, rimfire guns, and airguns. Since it clamps directly to Arca, you'll want a rail on your handguard or a sling-stud-to-Arca adapter if your gun doesn't have one already.
How fast can you deploy the FD-4 bipod legs?
The fast-deploying leg mechanism is the whole point of this bipod. You can swing from the stowed position out to a full 90 degrees in one quick motion, which is exactly what you want when you're moving between stages in PRS or NRL matches. Each leg moves independently and locks securely into position.
Can the Accu-Tac FD-4 cant and level on uneven ground?
Yes, the FD-4 has cant capability that lets you level your rifle on rough or sloped terrain. Once you've got it where you want it, the quick-detach lever locks the cant down tight so it holds steady while you shoot. That locking action is a big reason folks trust it under recoil.
Do you need tools to mount the FD-4 Arca Spec QD bipod?
No tools required. The Arca clamp slides onto your rail and tightens down securely by hand in seconds, so you can add or remove it between stages or when packing up. That quick-detach setup is what the QD in the name refers to.






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