Buffer Tube: A&K M249 / MK46 / Lambda MK48 – FULCRUM Series
Designed by Bull Craft — not copied, not outsourced. We’re at the forefront of SLS innovation, and this buffer tube proves it. Engineered for A&K M249, MK46, and Lambda MK48 platforms, it’s a 4 oz beast that replaces the bloated 2 lb OEM unit without sacrificing strength, modularity, or HPA routing.
Built in-house using our battle-grade Nylon PA12, the FULCRUM Buffer Tube is lightweight, rock-solid, and ready to fight.
✅ Made in the USA
✅ Ultra-Lightweight — just 4 oz vs. 2 lb OEM tube
✅ Super Durable Nylon PA12 Construction
✅ Supports Multiple Stock Options
✅ HPA Line Routing Included
✅ Compatible with A&K M249, MK46 & Lambda MK48
✅ Superb Support via email, phone, Facebook, Instagram, and in-store
✅ Quick Turnaround & Reliable Shipping
✅ Actual Availability — No ghost listings
Weight: 4 oz
Compatibility: A&K M249, MK46, Lambda MK48 (HPA & AEG builds)
Built Light. Ready to Fight.
