{"product_id":"hpa-adapter-hi-capa-to-m4-straight","title":"HPA Adapter Hi-Capa to M4 (Straight)","description":"\u003cp\u003eInjection-moulded adapter enabling Hi-Capa pistols to use M4 AEG magazines with HPA systems.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDurable injection-moulded polymer construction\u003c\/li\u003e\n\u003cli\u003eUS-thread HPA fitting pre-installed for instant setup\u003c\/li\u003e\n\u003cli\u003eIntegrated BB-retention system ensures consistent feeding\u003c\/li\u003e\n\u003cli\u003eRemovable magwell and shim set for fine fitment\u003c\/li\u003e\n\u003cli\u003eUses standard M4 AEG magazines for increased capacity\u003c\/li\u003e\n\u003cli\u003eMaintains consistent FPS and accuracy with no cooldown\u003c\/li\u003e\n\u003cli\u003ePerforms reliably in cold or low-temperature environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe AirTac HPA Adapter Hi-Capa to M4 allows Hi-Capa gas blowback pistols to run on high-pressure air while feeding from standard M4 AEG magazines. Its robust polymer body is injection-moulded for long-term durability and field stability, delivering a secure, precise fit to your pistol frame. The pre-installed US-thread connector provides a direct link to most HPA setups, while the built-in BB-retention system ensures seamless feeding under rapid-fire conditions and during reloads.\u003cbr\u003e\u003cbr\u003eBy switching to HPA, users eliminate the performance dips caused by gas cooldown, achieving consistent FPS and reliable accuracy from the first shot to the last. The use of M4 AEG magazines increases ammunition capacity dramatically, ideal for extended skirmishes or competitive play. Resistant to cold-weather performance loss, this adapter keeps your loadout operational year-round. Complete with all necessary fitment hardware, it’s a professional-grade enhancement for players seeking precision, consistency, and endurance from their sidearm system.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRange Overview:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAirTac’s HPA Adapters range converts traditional gas-powered replicas to use high-pressure air magazine systems with seamless reliability. Designed for multiple replica platforms, each adapter features precision-moulded construction, a secure BB-retention system, and standardised US-thread fittings for broad compatibility. The range combines rugged strength with practical installation, giving players smoother reloads and extended playtime through improved air efficiency and modular flexibility.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInjection-moulded polymer housings provide durability and consistent alignment\u003c\/li\u003e\n\u003cli\u003eStandard US-thread fittings ensure cross-system HPA compatibility\u003c\/li\u003e\n\u003cli\u003eIntegrated BB-retention systems prevent feed loss during reloads\u003c\/li\u003e\n\u003cli\u003eSupplied with magwell inserts, screws and shim sets for precise fitment\u003c\/li\u003e\n\u003cli\u003eAvailable for multiple pistol and SMG platforms for modular loadouts\u003c\/li\u003e\n\u003cli\u003eEngineered for reliability, consistency and long-term performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eBrand Statement:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eAirTac specialise in developing high-performance HPA conversion systems for airsoft enthusiasts seeking consistent, efficient, and adaptable performance. Their focus on precision engineering and robust construction ensures every product delivers dependable field use, intuitive function, and lasting value.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSafety Information:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDo not exceed 150 PSI when operating any airsoft HPA adapter Always use air regulated by a secondary regulator Check PSI output before connecting air to the adapter Do not connect directly to unregulated air sources, CO2 systems, or high-pressure tanks Do not use with incompatible high-pressure air lines or fittings Always ensure correct setup and operation before use\u003c\/p\u003e","brand":"Airtac","offers":[{"title":"Default Title","offer_id":56942681883010,"sku":"AT-HC-M4","price":35.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0739\/8224\/7217\/files\/HPAAdapterHi-CapatoM4_Straight.jpg?v=1790264829","url":"https:\/\/killerinstinctairsoft.co.uk\/products\/hpa-adapter-hi-capa-to-m4-straight","provider":"Killer Instinct Tactical","version":"1.0","type":"link"}