[Hill] Air Pump MK5 Pro, Moisture Filter (+Dry Pack) PCP

 Description: 

The Hill MK5 Pro (often listed as the Hill MK5 Pro with Dry-Pac or Hill MK5 Hand Pump with Moisture Filter) is a premium, manual 3-stage high-pressure hand pump designed specifically for filling Pre-Charged Pneumatic (PCP) airguns—think pellet rifles and pistols that run on compressed air rather than CO2 or springs.

It's manufactured in the UK by Hill (a well-regarded British company specializing in airgun equipment) and is popular among airgun enthusiasts as a portable, cost-effective alternative to scuba tanks or electric compressors.

The "Pro" designation (or the version you asked about) highlights the inclusion of Hill's patented Dry-Pac moisture filter system, which is the standout feature.

 

Key Features

Dry-Pac Moisture Filter System: This is the "moisture filter air pump" part. The patented color-changing desiccant media (beads that shift color as they absorb moisture) removes approximately 90% of moisture from the intake air before it enters your PCP gun.

This prevents internal corrosion, rust, or damage to seals/valves in humid environments— a common issue with basic hand pumps. The filter is easy to monitor and replace (refills are inexpensive and available separately). Some kits include the upgraded Dry-Pac Pro with additional carbon and micro-fiber stages for even cleaner air.

Pressure Rating: Up to 4500 PSI / 310 BAR—plenty for most modern PCPs.

3-Stage Design: Makes pumping easier at higher pressures compared to single- or dual-stage pumps.

Build & Ease of Use: Nickel-plated finish for better wear and moisture resistance. The MK5 generation is reportedly ~20% easier to pump than earlier models, with a redesigned interior, built-in pressure gauge, footrest, bleed valve (for safely releasing excess air), and quick field-stripping for maintenance in about 5 minutes.

Hose & Connections: Comes with a hose ending in a 1/8" BSP female fitting (common adapters like Foster or quick-disconnect may be needed for your specific gun).

Other Perks: Compact and portable (no electricity or tanks required), with a reputation for durability and good customer support/parts availability.

 

Who It's For

It's ideal for airgun hobbyists who want a reliable, no-fuss way to top off their PCPs at home, on the range, or in the field—especially if you live in a humid climate where moisture control is critical. Many users praise its build quality over cheaper Chinese pumps, though it requires periodic maintenance (lubing and drying internals) to avoid long-term issues like internal rust.

It's not for high-volume use (pumping to full pressure multiple times a day gets tiring), so serious shooters often pair it with an electric compressor as a backup.

 

Quick Notes

Comes with a limited lifetime or multi-year warranty in most markets.

If you're considering buying one, check compatibility with your specific PCP (adapters are cheap), and always follow the maintenance guidelines for longevity.