Real Avid MASTER-FIT Free-Float Barrel Nut Crowfoot – 5 Sizes

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BLACK RAPTOR QUICK CHECK

MASTER-FIT Free-Float Barrel Nut Crowfoot: a single 1/2-inch crowfoot in one of five selectable sizes. The decisive factor is the actual outer dimension of the barrel nut – “Free-Float” alone does not describe the wrench size.

1-1/16, 1-1/8, 1-1/4, 1-5/16 inch or 30 mm
titanium-coated stainless steel
for existing 1/2-inch torque wrench


Fits well / rather doesn’t fit


Fits well if the barrel nut size is clearly determined and only exactly this crowfoot is missing in the existing tool system.


Rather doesn’t fit if only “AR” or “Free-Float” is known, multiple sizes are needed, or no suitable counterhold/torque wrench is available.


Variant selection without guesswork


first shop choice: 1-1/8 inch
variant 2: 1-1/16 inch
variant 3: 1-1/4 inch
variant 4: 1-5/16 inch
variant 5: 30 mm

Do not “make” inch and millimeter sizes fit each other. The head must sit fully and squarely on the intended surface without force.

Features & practical effect


Size-specific crowfoot Reduces play compared to an oversized universal tool.


1/2-inch drive Integrates the head into an existing torque workflow.


Titanium-coated stainless steel For repeated workshop use; the coating does not replace a clean fit.


Single purchase Economical if only one defined size is missing; for many systems, a set makes more sense.


Limits & risk of wrong purchase

No universal torque value: target value comes exclusively from the component/firearm manufacturer.
The crowfoot does not replace a suitable upper/component mount.
Do not load if partial contact, wobbling, or play occurs.
Crowfoot orientation can affect the effective lever length; follow the torque wrench instructions.

Practical/trainer tip
Fit before force: initially place the head without torque
Insert the wrench dry and check from two viewing angles. Only connect the drive when the contact surfaces fully engage. In workshops with multiple systems, document barrel nut size and corresponding instructions.
Technical Data & Practical Interpretation


Drive
1/2 inch – torque wrench sold separately.


Material
Stainless steel with titanium coating.


Sizes
1-1/16, 1-1/8, 1-1/4, 1-5/16 inch and 30 mm.


Delivery Principle
exactly one Crowfoot in the chosen size, no 5-piece set.


Scope of Delivery
1 × Real Avid MASTER-FIT Crowfoot in the chosen size. Torque wrench, upper receiver, barrel nut and assembly consumables are not included.
Alternative
Those who want to cover several defined AR work points compare the MASTER-FIT AR-15 Crowfoot wrench set.
FAQ
Is a five-piece set delivered? No. Exactly the selected single size is delivered. Does the wrench fit every free-float barrel nut? No. The actual outer dimension and engagement geometry must match the chosen size. Is a torque wrench included? No. A suitable 1/2-inch torque wrench is required. What torque applies? Only the specified value of the specific component/firearm manufacturer, not the tool name.
Black-Raptor Classification: A precise single tool for a confirmed barrel nut size. The biggest risk of a bad purchase is an estimated instead of measured/documented wrench size.