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Combo wrench or crowfoot?
| Combo armorer's wrench | Crowfoot | |
|---|---|---|
| What it is | One wrench with several heads | A single head that fits a torque wrench |
| Torque reading | Some have a torque wrench drive | Used with a torque wrench |
| Best for | Common mil-spec parts | Free-float barrel nuts sized to one handguard |
Free-float handguards use their own barrel nut sizes. Match the wrench to the handguard maker's barrel nut before ordering.
Brands like Real Avid, Wheeler, Magpul, Geissele, Midwest Industries, Odin Works and NcStar, with more added as stock comes in.
Armorer's Wrench FAQ
Which wrench fits my handguard?
Mil-spec delta ring and A2 setups fit most combo wrenches. Free-float handguards often need a wrench or crowfoot made for that brand's nut, so check the size listed in each product.
What is an action wrench for?
It holds a bolt-action receiver, like a Remington 700 or Savage 110, so a barrel can be removed or installed with a barrel vise.