Airtac HYP-AR HYP-556 MWS HPA Receiver with Trigger Box Installed — Style 2
Airtac HYP-AR HYP-556 MWS HPA Receiver with Trigger Box Installed — Style 2
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DETAILS
DETAILS
- description
Buy the Style 2 lower on its own and the first line of the manual is about sourcing a trigger box. This listing removes that step. Box, fire selector and bolt stop are fitted and pinned, so what arrives is a lower you can hang an upper on.
Same material and same process as the bare version: billet 7075, Cerakote, machined in Northern Ireland, with the air unit inside the receiver rather than bolted to a magazine adapter. It runs on PTS EPM M4 magazines and every factory control stays live.
Where a gas rifle loses pressure as the magazine chills, a regulated feed does not. Set your bolt speed once on the bench with a regulator and it is the same on the last shot of the day as the first.
If you want to fit your own trigger group, or already have one out of a donor gun, the bare Style 2 receiver is the one to pick instead.
Specifications
| Specification | Detail |
|---|---|
| Material | CNC-machined 7075 aluminium |
| Finish | Cerakote |
| Manufactured | Northern Ireland |
| Supplied as | Receiver with the MWS trigger box kit pre-installed |
| Grip | Included, as pictured |
| Magazine | PTS EPM M4 |
| Air fitting | US Foster as standard; EU fittings sold separately |
| Operating pressure | 130–150 psi, per the manufacturer’s assembly guide |
| Receiver cut | Style 2 |
| Host platform | Tokyo Marui MWS or Double Eagle MWS lower |
| Buffer tube | MWS-spec tubes and any stock that threads onto the buffer tube |
Good to know before you buy
What is not in the box: an upper, a bolt, a barrel, a stock, and the air side. Those come from your donor gun and from a line, a regulator and a tank.
Pick the cut that matches your gun before anything else. Tokyo Marui and Double Eagle lowers are machined to different profiles.
If a Double Eagle build will not cycle once assembled, the manufacturer points at sear height and an extra shim under the box. Sear height varies between their models.
Black and Tan are the finishes carried in this configuration, in both platform cuts.
Frequently asked questions
Is this the same receiver as the one listed without a trigger box?
Yes, the same Style 2 cut. The difference is that the trigger group is already in it.
Why would I buy this rather than the parts separately?
To skip the fitting. If you are happy pinning a trigger box and shimming it, the separate route gives you the same end result.
Does it come with a grip?
Yes, the grip pictured is included in this configuration.
What pressure does it want?
Roughly 130 to 150 psi is the window the manufacturer’s own fitting document works in. Prioritise a bolt that comes back to battery every time, then dial the energy down with an NPAS.