ZCI M870 Stock Adapter – Polymer Upgrade

The ZCI M870 Stock Adapter is a practical upgrade for owners of Cyma M870 spring shotguns seeking improved ergonomics and modularity. This polymer-constructed adapter replaces the standard stock setup, allowing you to customise your shotgun’s rear end with a GBB-style pistol grip of your choice.

Key Features

• Polymer construction – lightweight and durable
• Cyma M870 compatibility – engineered for optimal fit
• Tool-free installation – reuses original pistol grip screw
• Modular design – accepts any standard GBB-style pistol grip
• Dual QD sling attachment points – tactical flexibility on both flanks
• Female threaded rear – securely mounts stock tubes

Real-World Use Cases

This adapter excels in milsim loadouts where you need a shotgun with modern furniture to match your kit. Skirmish players benefit from the QD sling mounts for quick weapon transitions, whilst the modular grip system lets you fine-tune comfort for your hand size and playstyle. The straightforward installation means you can swap between standard and tactical configurations without specialist tools.

Technical Specifications

• Brand: ZCI
• Model: M870 Stock Adapter
• SKU: SK-011
• Material: Polymer
• Compatibility: Cyma M870 spring shotguns
• Rear attachment: Female thread (stock tube)
• Sling mounts: QD (quantity 2)
• Installation: Original screw retained

Compatibility & Upgrades

The ZCI M870 Stock Adapter is specifically optimised for Cyma M870 variants. The modular design accepts any GBB-pattern pistol grip, giving you freedom to personalise your shotgun’s handling. The female threaded rear accepts standard M870-pattern stock tubes, so you can choose your preferred cheek-rest and length of pull.

UK Legal & Site Notes

As an adapter and passive component, the ZCI M870 Stock Adapter is entirely legal for UK ownership and use. Always verify your site’s rules on shotgun configuration before deployment; some sites have specific requirements for stock type and grip angle. Check with your local skirmish venue or milsim organiser if unsure.

Transform your M870 into a modern, ergonomic shotgun platform. Order the ZCI M870 Stock Adapter from Airsoftdirect today and take advantage of free UK delivery on orders over £99.