Delta Vanguard Sentry (13″ – Black) AEG Rifle

Description

Long-Range Precision, Midnight Stealth Aesthetics

Command the long-distance engagement line with the NUPROL Delta Vanguard Sentry 13″ AEG Rifle in sleek Black. Engineered specifically for players who prioritize maximum rail real estate, extended accuracy, and a classic tactical silhouette, the Sentry 13″ represents the field-leaning configurations of NUPROL’s advanced Vanguard family. By replacing heavy, old-school quad rails with a streamlined, modern M-LOK handguard, this full-length rifle provides a clean, aggressive profile optimized for tracking moving targets across open spaces. Outfitted with premium internal fire controls, it delivers tournament-grade trigger response right out of the box.

Key Features & Performance

• Vortex Programmable ETU: Features a factory-installed electronic trigger unit allowing you to completely customize your fire selectors with binary trigger options, full-auto, and 2 to 5-round burst control.
• Slimline 13″ M-LOK Handguard: Features the modern industry-standard M-LOK attachment layout, dropping front-end bulk while providing ample space for custom grips, torches, and target layout accessories.
• 6.03mm Precision Tightbore Barrel: Factory fitted with a precision-honed inner lining, an adjustable rotary hop-up chamber, and a 50-degree hop rubber to maximize shot-to-shot compression over long field distances.
• Deans Wired Efficiency: Rear-wired configuration utilizing high-performance Deans (T-Plug) connections directly from the factory for reduced electrical resistance and an improved rate of fire.
• Rugged Nylon-Fibre Frame: Both the upper receiver, lower receiver, and extended handguard are molded from high-density nylon polymer, keeping the long-barreled rifle incredibly tough yet lightweight.

The “Pro” Take

The Delta Vanguard Sentry 13″ is a masterful option for skirmishers who want a true field-rifle presence without the front-heavy fatigue of traditional full-metal platforms. The real magic here is the form factor; by making the 13″ M-LOK assembly entirely out of high-density nylon polymer, NUPROL has kept the center of gravity shifted toward the rear. This design choice ensures you can shoulder, swing, and track moving targets across wide outdoor sectors seamlessly, all while the advanced Vortex ETU provides a crisp, snappy trigger feel that rivals boutique custom builds.

UK Spec & Site Performance

• UKARA Compliant Stealth Finish: Arrives finished in a non-reflective, professional matte black palette, making it an excellent primary choice for registered UKARA players or valid defense holders looking for a clean, realistic aesthetic.
• Instant UK Site Compliance: Optimized directly from the factory to output a reliable 1J of muzzle energy, hitting approximately 330 FPS using 0.20g BBs to sit safely under standard UK field limits.
• M90 Quick-Change Spring System: Adaptation is completely effortless; the quick-access spring guide hidden within the buffer tube allows you to swap your mainspring down for close-quarters limits without opening the gearbox casing.
• Woodland Domination: The pairing of the extended 13″ outer frame and a 6.03mm tightbore barrel gives you the optimal airseal and barrel length required to lift heavier 0.25g or 0.28g BBs, punching cleanly through shifting British woodland treelines and crosswinds.

Friendly FAQ

Q: What size battery fits inside this rifle?
A: The Sentry 13″ is rear-wired into a modern, skeletonised adjustable stock and uses a high-efficiency Deans (T-Plug) connector. A standard 7.4V LiPo nunchuck or stick battery provides an excellent fit and optimal power delivery.

Q: Can I attach standard Picatinny rail accessories to this handguard?
A: Yes. While the handguard uses a modern slimline M-LOK pattern for direct attachment, the upper receiver retains a continuous 20mm flat-top rail for optics, and you can easily bolt standard M-LOK-to-Picatinny rail sections onto the sides or bottom for traditional torches, lasers, and grips.

Q: What kind of magazine comes included in the box?
A: The rifle comes supplied with a reliable 120-round mid-cap magazine. Because it uses standard AR-15/M4 magazine well dimensions, it is widely compatible with nearly all major brand M4 AEG mid-caps and high-caps on the market.

Q: How do I program the binary trigger or burst modes on the Vortex ETU?
A: No external cords, dongles, or smartphone applications are required. The internal Vortex processor allows you to cycle through choices like burst fire or binary trigger on the fly using simple sequences of your fire-selector switch and trigger pulls.