REAL AVID MSTR FITCASTLE NUT WRENCH
$26.94
The Real Avid MSTR FitCastle Nut Wrench is an indispensable tool for any firearms enthusiast, expertly designed to fit a variety of castle nuts on AR-15 platforms. With Real Avid’s commitment to precision engineering, this wrench simplifies the maintenance and customization processes, making it essential for both amateur and professional gunsmiths.
15 in stock
Real Avid Master-Fit Wrench, Wrench, Stainless Steel, Thin Castle Nut AVMFTCNW
| Weight | 0.400 lbs |
|---|---|
| Dimensions | 6.750 × 4.750 × 0.560 in |
| Manufacturer | Real Avid |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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