Best Fittings Foster Quick Release Test/Dust Plug
£4.50
If you have done the upgrade from BSP to Foster QR, you can now find out how much air you have left in your air tank with this almost essential part.
By connecting this Best Fittings Foster Test Plug and opening the valve the gauge on the tank then reads the pressure in the tank.
Keep this connected to your quick detach whip to act as a dust protector when not in use.
Quantity
Related Products

More Than Just Marketing Waffle
Our blog isn’t written by someone who’s never held an air rifle. It’s built from real-world experience, hard truths, and occasionally a well-placed rant. That’s why shooters across the UK actually read it.
Whether you’re after solid buying advice, after-sales guidance, deep dives into industry trends, or a look behind the curtain in Behind the Barrel, our blog is here to inform—not just to sell.
-
🧠 Guides & Advice – From zeroing your scope to choosing the right regulator.
-
🛠 After-Sales Know-How – Real support, not copy-paste manuals.
-
🎯 Staff Picks – The gear we rate (and we’ve tried it all).
-
🗣 Behind the Barrel – Less brochure, more brain—history, opinion, and industry talk.
Join 20,000+ Readers Who Actually Want to Know What They’re Buying
Get notified when we post something worth your time.
No spam. No fluff. No sponsored nonsense.
Reviews
The Foster QR test/dust plug supplied was of excellent quality and delivered quickly.