MagnetoSpeed Large Brake Adapter
$142.82
The MagnetoSpeed Large Brake Adapter allows use of the V3 Chronograph with muzzle brakes up to 7.7″ long and 1.6″ barrel diameter, ideal for .338 and .50 BMG rifles.
1 in stock
The Large Brake Adapter will allow the V3 Chronograph to be used with muzzle brakes up to 7.7" in length and barrel diameters up to 1.6" at the muzzle.
This product was designed to compensate for the longer muzzle brakes commonly found on large caliber rifles such as the .338 and .50 BMG.
The Large Brake Adapter is a milled 6061 aluminum fixture that uses the included V3 Rail Adapter to clamp onto your weapon's barrel for easy use with your V3 Chronograph's bayonet.
*MagnetoSpeed V3 Chronograph not included
| Weight | 0.950 lbs |
|---|---|
| Dimensions | 8.700 × 4.300 × 3.250 in |
| Manufacturer | MagnetoSpeed |
| Material | 6061 aluminum |
| Compatible With | MagnetoSpeed V3 Chronograph |
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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