PKM 5600rd Box Magazine Insert

Upgrade your original box magazine with dependable, high-capacity feeding.

This purpose-built insert replaces the factory feeding components inside a compatible PKM or PKP box magazine. Powered by our proven Cattle Drive™ Springless Clutch Drive Feeding System, it provides smooth, consistent motor-driven feeding with a capacity of approximately 5,600 BBs.

The updated design includes an improved circuit board for better electrical continuity and dependable performance during sustained use. Each insert is designed, manufactured, and assembled in-house from durable SLS Nylon PA12.

Features

• Approximately 5,600-BB capacity

• Cattle Drive™ Springless Clutch Drive Feeding System

• Improved circuit board for reliable electrical continuity

• Powerful motor for consistent feeding

• Internal, easy-access battery compartment

• Durable SLS Nylon PA12 construction

• Includes Bowden spring

• HPA and AEG wiring diagrams included

• Tested with TITAN, ASTER, Leviathan, and GATE WARFET

• Designed, manufactured, and assembled in the USA

• Fast turnaround and reliable shipping

• No ghost listings—we ship what we list

• Support available by email, phone, Facebook, Instagram, and in-store

Power Requirements

For optimal performance, we recommend an 11.1V LiPo battery.

The insert can also operate on a 7.4V LiPo, but feeding performance and maximum rate of fire may be reduced.

Specifications

• Capacity: Approximately 5,600 BBs

• Weight: Approximately 15 oz

• Construction: SLS Nylon PA12

• Product type: Internal box-magazine insert

• Bowden spring: Included

• Battery: Not included

⚠️ Important HPA Compatibility Notice

All Bull Craft motor-driven magazine inserts require a Trigger Control Unit (TCU) when used with HPA platforms such as PolarStar or Wolverine.

Standard HPA FCUs do not supply enough power to operate the feeding motor. With a compatible TCU installed, the insert feeds automatically when the trigger is pulled.

Already using an Airsoft Junkiez TCU? You’re ready to go—compatibility has been confirmed.

⚠️ Battery Connector Not Included

The insert is supplied with approximately 6.5 inches of wire and no battery connector installed. This allows you to use JST, Deans/T-Plug, or another connector suited to your build.

We will install your preferred connector at no additional charge. If you know the wire length your setup requires, leave a note with your order specifying:

• Your preferred connector

• Your required wire length

We’ll cut the wire to the requested length and install the connector before shipping.

Because battery placement differs between builds, providing the correct wire length helps prevent excess wire or a lead that is too short to reach your battery.

⚠️ Don’t Be Fooled by Knockoffs

The Cattle Drive™ Springless Clutch Drive Feeding System is often imitated but never duplicated.

• Designed, refined, and proven in-house

• Manufactured from premium SLS Nylon PA12

• Equipped with a robust, field-tested motor system

• Backed by real-world testing and genuine customer support

Choose the original. Choose Bull Craft.