Tribe Tactical BFM-100 M249 Airsoft Magazine + Insert

Tribe Tactical BFM-100 M249 Airsoft Magazine Conversion

Premium Tribe Tactical shell. Approximately 3,500-BB capacity. Powered by Bull Craft’s Cattle Drive™ feeding system.

This Bull Craft magazine conversion transforms the Tribe Tactical Supply BFM-100 nutsack shell into a high-capacity electric airsoft magazine for M249, MK46 and compatible support-weapon platforms.

Choose the complete magazine with a Tribe Tactical BFM-100 shell and Bull Craft insert, or purchase the insert by itself for a BFM-100 shell you already own.

This insert is designed specifically for the Tribe Tactical Supply BFM-100 shell. It does not fit standard airsoft M249 nutsack magazine shells. If you have a regular airsoft nutsack magazine, see our M249 2,500-round standard-shell magazine insert.

Available Configurations

Complete BFM-100 Magazine

Includes a genuine Tribe Tactical Supply BFM-100 shell with the Bull Craft Cattle Drive™ magazine insert installed.

BFM-100 Insert Only

For customers who already own a Tribe Tactical Supply BFM-100 shell. This option includes the Bull Craft airsoft magazine insert without the fabric shell.

BFM-100 Shell Colors

Complete magazine configurations are available in:

• MultiCam
• Ranger Green
• Coyote Brown
• Black
• M81 Woodland

The BFM-100 is constructed from higher-quality materials than typical airsoft magazine shells, providing a more durable, realistic and field-ready magazine platform.

Cattle Drive™ Feed System

The Bull Craft insert uses our Cattle Drive™ Springless Clutch Drive Feeding System to deliver consistent feeding during sustained fire. Its high-torque motor and external speed adjustment allow the magazine to be tuned for a wide range of airsoft builds and rates of fire.

• Approximately 3,500-BB capacity
• Springless clutch-drive feeding system
• Externally adjustable feeding speed from approximately 6 to 40+ BPS
• Compatible with 7.4V and 11.1V LiPo batteries
• High-torque, self-clearing feed mechanism
• Durable SLS-printed Nylon PA12 insert components
• Includes Bowden feed spring
• Designed and manufactured by Bull Craft Industries in Florida, USA

Platform and Feed Block Options

Select the feed block that matches your airsoft platform when ordering:

• M249 feed block
• Stoner 96 feed block with feed tube adapter
• Stoner 63 feed block
• M240 feed block
• No feed block

Confirm your platform and required feed block before ordering. A feed block is included only when selected.

AEG and HPA Compatibility

AEG Setup

Select the AEG configuration when using the magazine with a compatible electronically controlled AEG. A separate Trigger Control Unit is not required for the standard AEG configuration.

HPA Setup

HPA platforms using PolarStar or Wolverine engines require a compatible Trigger Control Unit (TCU). A standard FCU cannot supply sufficient power for the magazine motor.

With the correct TCU installed, the magazine feeds automatically when the trigger is pulled. If you already own an Airsoft Junkiez TCU, no additional TCU is required. Otherwise, select the correct TCU when ordering or purchase a compatible TCU here.

Specifications

• Shell compatibility: Tribe Tactical Supply BFM-100
• Airsoft capacity: Approximately 3,500 BBs
• Feed rate: Externally adjustable from approximately 6 to 40+ BPS
• Power: 7.4V or 11.1V LiPo
• Insert construction: SLS Nylon PA12
• Empty weight: Approximately 1.07 lb
• Loaded weight: Approximately 3.1 lb with 0.25g BBs

Connector and Wiring Information

The magazine insert is supplied with approximately 6.5 inches of wire and no battery connector installed by default. This allows you to choose JST, Deans/T-Plug or another connector that matches your build.

Bull Craft can install your preferred connector at no additional charge. Include the connector type and required wire length in your order notes. If you do not know the correct wire length, contact us before ordering.

What’s Included

• Your selected complete-magazine or insert-only configuration
• Bowden feed spring
• Feed block only when selected
• TCU only when selected

U.S. Shipping Restriction

The Tribe Tactical Supply BFM-100 shell cannot be shipped outside the United States. The Bull Craft insert-only configuration may be available for international shipping.

International customers should select the insert-only option and provide their own BFM-100 shell. Contact Bull Craft before ordering if you have questions about destination eligibility.

Installation and Support

Before installation, disconnect the battery or air supply and confirm that you selected the correct feed block and electronic configuration. Visit our installation video library for setup guidance or contact Bull Craft for technical support.

Browse additional M249, MK46 and MK48 upgrades.