Specna Arms SA-P26 PRIME™ M4 AEG – Daniel Defense MK18 Black

The Specna Arms SA-P26 PRIME M4 AEG brings genuine tactical aesthetics and proven internals to the compact carbine category. Inspired by the Daniel Defense MK18, this 12.5-inch rifle suits CQB, woodland, and urban play equally well.

Key Features

• Brushless motor – efficient, quiet, and long-lasting performance
• Rotary hop-up – precise range adjustment for consistent accuracy
• Programmable firing modes – semi, full auto, and custom trigger settings via Specna Arms software
• CNC aluminium handguard and receiver – lightweight rigidity and professional finish
• 20mm RIS/RAS rail system – mounting flexibility for optics, lights, and tactical accessories
• M4 Crane stock with multi-position adjustment – comfortable, adaptable cheek weld
• Dual magazine compatibility – standard AEG mid-cap design (125-round capacity)
• Deans connector – premium quick-disconnect for reliable power transfer

Real-World Use Cases

Built for speed and manoeuvrability in close-quarters environments, the SA-P26 PRIME excels in indoor CQB sites, dense woodland, and urban fields where a shorter platform is advantageous. The 350 fps velocity keeps you competitive at typical UK airsoft engagement distances, whilst the rotary hop-up maintains accuracy from 20–40 metres without over-hopping. Milsim players appreciate the authentic Daniel Defense profile and ergonomic layout; skirmishers value the compact length and responsive trigger. The brushless motor minimises wear, making this a dependable workhorse for regular play.

Technical Specifications

• Velocity: 350 fps (20g BBs)
• Gearbox: V2
• Motor: Brushless (high torque, low noise)
• Hop-up: Rotary
• Magazine capacity: 125 rounds (mid-cap)
• Magazine compatibility: Standard AEG (mid-cap)
• Battery: 7.4V LiPo (Deans connector; Mini-Tamiya adaptor included)
• Firing modes: Safe, semi-automatic, full automatic, programmable
• Barrel length: 12.5 inches (318 mm)
• Overall length: 79 cm (stock collapsed)
• Weight: 2.7 kg (unloaded)
• Construction: CNC-milled aluminium handguard and receiver; alloy flash hider, outer barrel, trigger, buffer tube; polymer furniture (stock, foregrip, pistol grip, iron sights); steel hardware
• Rail system: 20mm RIS/RAS (Picatinny receiver)
• Stock: Sliding M4 Crane stock with five-position adjustment

Compatibility & Upgrades

The V2 gearbox and standard AEG platform allow straightforward internal upgrades: drop-in hop-up bucking swaps, gear sets for higher ROF, and spring changes for fps adjustment (subject to your site’s limits). The Deans connector simplifies battery management, and the 20mm rail accepts any standard optic, flashlight, or rail furniture. Polymer furniture can be swapped for M4 Mil-Spec aftermarket components if desired. The foregrip height and angle are locked, but the rear stock is fully adjustable for different body types and loadouts.

UK Legal & Site Notes

This airsoft replica is designed and sold as a two-tone replica or fully licensed (colour dependent on stock selection). Check your chosen site’s chronograph limits—many require sub-350 fps; a spring adjustment or foam spacer may be needed. The M4 platform is widely permitted at UK sites. Always transport your rifle in a bag or gun case and carry your UKARA certificate or defence under section 36A. Eye protection is mandatory at all skirmish sites.

Order your Specna Arms SA-P26 PRIME M4 AEG from Airsoftdirect UK and receive two mid-cap magazines, speed loader, vertical foregrip, and battery adaptor. In stock and ready to ship.