Upgrade your M249 with our BCI M249 Nutsack Magazine Insert. Our springless Cattle Drive Feed System ensures flawless and high-speed feeding, while the external speed control screw puts you in control. Proudly made in Florida, USA. You asked, we have answered! A solid M249 insert that is available, sturdy, powerful, consistent, efficient and trustworthy. 

• Made in the USA
• Superb Support & Communication: email, phone, facebook, instagram, in store
• Massive Motor w/ External Speed Adjustability
• Springless Design
• Excellent Feeding
• Available Wiring Diagrams
• Super Durable Nylon PA12
• Quick Turnaround and Shipping
• Actual Availability
• Comes w/ Bowden Spring

HPA engines: PolarStar / Wolverine REQUIRE a TCU as the FCU doesn't have enough power to run the drum.

We have tested/installed the Outlaw drum and Nutsack mag with these mosfets: Titan Gel Blaster, Aster Gel Blaster, Leviathan Gel Blaster and Gate Warfet.

Weight: 12.5 oz.
Holds: 2500rnds