KRYTAC Rotary HOP-Up Unit – V2 Gearbox M4/AR-15

The KRYTAC Rotary HOP-Up Unit is a drop-in upgrade component engineered for players running M4 and AR-15 AEGs with V2 gearbox platforms. Built from durable polymer construction, this hop-up unit delivers precise, repeatable adjustment for optimised projectile trajectory and grouping performance.

Key Features

• Rotary hop-up adjustment mechanism – smooth, precise fine-tuning without disassembly
• V2 gearbox compatibility – direct fit for standard M4/AR-15 AEG builds
• Polymer construction – lightweight yet rigid for reliable performance
• Enhanced accuracy – consistent hop application across engagement distances
• Tool-free adjustment – quick tuning between game sessions or field conditions

Real-World Use Cases

Whether you’re a competitive milsim player needing sub-2cm groupings at 30m, a casual skirmisher dialling in a fresh build, or an upgrade-focused technician swapping out stock components, the KRYTAC rotary unit gives you the control to match your platform’s potential. It’s particularly valuable in longer-range CQB to mid-field roles where hop consistency directly impacts hit probability.

Technical Specifications

• Compatibility: M4/AR-15 AEG, V2 gearbox
• Adjustment Type: Rotary (fine-tuned dial)
• Construction: Polymer
• Colour: Black

Compatibility & Upgrades

This HOP-up unit fits standard V2 gearbox platforms found in most M4 and AR-15 airsoft rifles. It works with any compatible inner barrel (6.03mm to 6.10mm diameter recommended for optimal performance). Pair it with quality BB weights (0.20g–0.32g) and you’ll unlock the full potential of your rifle’s accuracy.

UK Legal & Site Notes

As a gearbox-compatible hop-up unit, this component is unrestricted in the UK and site-legal on any licensed airsoft site. No FPS or power limits apply to this internal component. Check your local site’s tech specs before attending, as some venues have strict internal upgrade policies.

Upgrade your M4 platform’s accuracy today with KRYTAC precision engineering.