Hop up unit Ultra for M4 RETROARMS (RA-9430)

BRAND RETROARMS

Ultra hop-up unit machined in CNC aluminium (7075 aerospace grade) offering a fully customisable chamber for M4/AR15 AEGs. Features adjustable nozzle shaft, improved internal barrel retention system and compatibility options for standard AEG hop-up rubbers.

Features:
Type: Ultra CNC hop-up unit
Model: RA-9430
Material: 7075 aluminium, CNC machined (aerospace grade)
Compatibility: Electric rifles M4/AR15 series (Marui standard — verify fit)
Weight: 10 g
Nozzle adjustment: Adjustable nozzle shaft for longitudinal positioning (0.2 mm increments with included shims)
Barrel retention: Redesigned clamp system with POM C-clip and custom lock nut to prevent longitudinal movement and rotation (hand-tighten only)
Chamber design: Flat bore area for hop rubber, includes rings to adapt and fine-tune standard AEG rubbers
Benefits: Improved feeding reliability, precise barrel centering and enhanced shot consistency
Included items: Shims/adapters (see product pack) — if not specified, Data not provided

Installation note: Verify lock nut max outer diameter (12.95 mm) fits your outer barrel before purchase