WE M4 Open Bolt HPA Drum
$164 – $253
Free US Shipping On Orders Over $200 With Code "Freeship"
30 Day Warranty + Lifetime Support *
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WE M4 Open Bolt HPA Drum Details
TAPP HPA Adapter
Use regular AEG mags in your GBB. Powered by High Pressure Air (HPA)
Pre-Built, Plug-and-Play, the Gas Blow Back HPA Adapter!
Concepted, Designed, Assembled, MADE in USA
– Use standard AEG magazines (M4, MP5, Drum, etc.) in your GBB platform
– HPA powered, we suggest 100-125 PSI. (HPA kit not included: tappairsoft.com/hpa)
– One-Piece Magazine-Adapter Design for better functionality and performance:
– Advanced BB feeding/retention system to prevent wasting ammo and more mag compatibility
– Single stack BB flow from source to feed lip (No insert or double stacking)
– No connection between magazine and adapter (Less o-rings, better air seal)
– SLS Nylon PA12 material for lightweight durable construction
– The whole nine yards; Tapp adapters come fully assembled, no need to sacrifice an existing magazine for parts
– HPA Foster Fitting (US Spec)
– Multiple gas route gaskets (swap and test for best adapter to nozzle air seal)
We don’t want our customers to make a mistake during installation, so we do it for you. Because of this, we include a 30-day warranty for the entire adapter.
We also offer lifetime support for technical issues and replacement parts (fees apply).
Compatibility: WE-Tech M16A1 / M16 Vietnam / M16VN / XM177 series. May work for other M4 M16A3 models but slight modification may be required
30 Day Warranty + Lifetime Support
All Tapp Airsoft products include a 30-day warranty. We also offer lifetime support for technical issues and replacement parts (fees apply).