Description
AirTac - High-Pressure Air Adapter Hi-Capa to M4 AEG Magazines
So you’re thinking about ditching green gas and stepping into the world of HPA? This AirTac Hi-Capa to M4 adapter makes that switch feel like a no-brainer. Designed specifically for airsoft Hi-Capa pistols, it lets you run standard M4 AEG magazines, massively boosting your ammo capacity and keeping you in the fight longer without constant reloads. Whether you’re into speedsoft or just want a more aggressive playstyle, this setup gives your sidearm a serious edge.
Built from durable injection-moulded polymer, the adapter keeps things lightweight while still being tough enough to handle regular skirmish use. The pre-installed US-thread HPA fitting means you can hook up to most HPA systems straight out of the box, making setup quick and painless. Inside, the integrated BB retention system helps prevent wasted rounds during mag swaps and ensures smooth, reliable feeding even when you’re firing fast.
One of the biggest advantages here is consistency. Unlike traditional gas-powered airsoft pistols, HPA eliminates cooldown issues, giving you stable FPS and improved shot-to-shot accuracy—especially in colder conditions where gas struggles. With included magwell inserts and a shim set, you can fine-tune the fit to your Hi-Capa for optimal alignment and performance. If you’re looking to upgrade your airsoft pistol into a high-capacity, competition-ready platform, this adapter is a solid move.
Highlights
- Converts Hi-Capa pistols to HPA using M4 AEG magazines
- Durable and lightweight injection-moulded polymer construction
- Pre-installed US-thread HPA fitting for easy connection
- Integrated BB retention system for efficient feeding
- Removable magwell for improved compatibility
- Includes shim set for precise fitment adjustment
- Greatly increased ammo capacity for extended gameplay
- Reliable performance in cold weather conditions
What's Included
- AirTac Hi-Capa to M4 HPA Adapter
- Removable magwell insert
- Shim set
- Mounting hardware
Technical Specifications
- Brand: AirTac
- Platform: Hi-Capa airsoft pistols
- Magazine Compatibility: M4 AEG magazines
- Connector Type: US-thread HPA fitting
- Construction: Injection-moulded polymer
- EAN: 5056444737847
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Delivery Information
Affordable Shipping – Starting from Just £2.50
Our delivery prices begin at only £2.50 for UK mainland orders, with free standard delivery available on all orders over £100*. To quickly find out the exact shipping cost for your items, simply add everything to your basket. In the basket, you'll see a link under the subtotal titled "Estimate Shipping & Tax"—click this, enter your delivery details, and you’ll get a full quote including whether you qualify for free shipping.
Free Shipping Offers
- UK Mainland: Free on orders over £100*
- Northern Ireland, Republic of Ireland, Scottish Highlands & Islands, and Isle of Man: Free on orders over £100*
- Channel Islands: Unfortunately, we do not offer free shipping to this region
*Free shipping is a 5 working day service. For example, an order placed on Monday would typically arrive the following Monday.
Mainland UK Delivery Options
- Royal Mail: From £2.50 (2 working days, price based on weight)
- Economy Delivery: £4.95 flat rate (2–4 working days)
- Express Delivery: £6.95 flat rate (1–2 working days)
Working days exclude Saturdays, Sundays, and public holidays. Need your order on a Saturday? We can arrange this for £20—please contact us directly after placing your order to pay the balance.
Delivery Prices – Outside Mainland UK
- Northern Ireland: From £5.95
- Scottish Highlands & Islands: From £5.95
- Isle of Man: From £5.95
- Republic of Ireland: £6.95 flat rate (any size order)
- Channel Islands: £7.95 flat rate (any size order)
We strive to keep our delivery charges as fair and straightforward as possible, with clear options to suit all needs and budgets.
