Blackhorn Division Custom Build Service
Send us your M249. We’ll turn it into a war machine.
Choose your upgrade path:
• Full Tactical Overhaul – Internal HPA or AEG upgrade plus our signature Bull Craft externals for maximum flex, fitment, and firepower.
• Core Build Only – Precision-tuned internals only. Add externals à la carte if you want to build your own beast.
• Complete Build Option – No donor gun? No problem. We supply the platform—polymer or full-metal receiver—plus internals and all Bull Craft externals. A&K M249 Build | BLACKHORN Division – Bull Craft Industries
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⚙️ External Components — Tactical, Modular, Unforgiving
• M249 AERIS Barrel (choice of front sight or no sight) — lightweight, aggressive, and mission-adaptable
• MK46 STRATIS Handguard or M249 M-LOK Handguard — modular rail system for full accessory loadout
• M249 FULCRUM Buffer Tube — stability meets sleek form
• MagPul MOE/CTR Stock + Bull Craft Butt Plate - adjustable, comfortable and field proven - the butt plate offers easy battery access.
• Charging Handle & Feed Block — reinforced for realism and durability
• TALON Motor Grip — ergonomic, textured, and rock-solid
• Straight or Curved Trigger — crisp, responsive and built for control
• M249 MAVERIX 2500 Round Mag Insert — high-capacity, low-profile, battle-ready
Prefer a curved trigger? Want the railed barrel? Need a stock adapter? We’ve got you. Minor external tweaks are welcome — but the internals stay locked. We know what works.
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? // AEG Variant — Mechanical Mayhem
• Brushless Motor — blistering torque and efficiency
• Helical Gearset — fast cycle, smooth torque delivery
• Compression-Tuned Internals — air seal perfection
• Premium Inner Barrel & Bucking — laser-like accuracy
• Gate WARFET — crisp trigger response, battery protection
• Steel Bearings & Bull Craft Piston Head — durability under fire
Performance Spec:
• Velocity: ~1.5J w/ .28g
• Trigger Response: Lightning-fast
• ROF: Tuned for aggressive suppression
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? // HPA Variant — Precision Under Pressure
• Bull Craft HPA Gearbox — reinforced, lightweight, and modular
• PolarStar F2 Engine — programmable, efficient, and deadly
• Premium Inner Barrel & Bucking — consistent and clean
• Amped IGL & Junkiez TCU — reliable air delivery and control
• M249 MAVERIX 2500 Round Mag Insert — same beast, same bite
Performance Spec:
• Velocity: ~1.5J w/ .28g
• Air Efficiency: Tuned for full mag dominance
• Trigger Response: Instantaneous
You ship it. We build it. You dominate.
