Hämmerli · Rifle
Hämmerli AR20
Bolt action · .177 Air (4.5mm) · introduced 2011
Also known as Haemmerli AR20, Hammerli AR20, Hämmerli AR20 Pro
About the Hämmerli AR20
The Hämmerli AR20 is a precharged pneumatic (PCP) match air rifle chambered in .177 (4.5mm) and designed for Olympic-style 10-metre target shooting. Built around a fully adjustable aluminium stock carrier with a settable cheek piece, length of pull and butt plate, it pairs a Lothar Walther match barrel with a Walther aluminium air cylinder and pressure gauge that delivers roughly 350 shots per fill. A finely tunable two-stage match trigger and match diopter sights make it a popular ISSF and competition-grade single-shot rifle.
Hämmerli, founded in Switzerland in 1863, built a reputation for precision target rifles and pistols that dominated Olympic shooting podiums for decades before the brand was absorbed into the Carl Walther / Umarex group. The AR20 carries that match-shooting pedigree into the precharged-pneumatic era.
Hämmerli AR20 specifications
General
- Type
- Rifle
- Action
- Bolt action
- Firing mechanism
- Fixed firing pin
- Trigger
- Two stage
- Calibres
- .177 Air (4.5mm)
- Magazine capacity
- 1 rounds
- Magazine
- Internal
Dimensions
- Barrel length
- 500 mm (19.7 in)
- Overall length
- 1109 mm (43.7 in)
- Height
- 230 mm (9.1 in)
- Width
- 60 mm (2.4 in)
- Weight (empty)
- 3.97 kg (8.75 lb)
Barrel
- Rifling
- Right hand
Materials
- Barrel
- Steel
- Receiver / frame
- Aluminum
- Stock
- Aluminum
- Finish
- anodized
Performance
- Muzzle velocity (typical)
- 170 m/s (558 fps)
- Muzzle energy (typical)
- 7.5 J (6 ft·lb)
- Effective range
- 10 m
History
- Introduced
- 2011
- Production status
- In production
- Country of origin
- DE
Features
- Lothar walther match barrel
- Adjustable cheek piece
- Adjustable stock length
- Adjustable butt plate
- Match diopter sights
- Ambidextrous
- Precharged pneumatic
- Pressure gauge
Sold under the Hämmerli brand, now part of Carl Walther / Umarex. The AR20 Pro is the flagship variant with an enhanced aluminium stock and trigger; an FT (Field Target) version is also offered. Maximum energy is capped at 7.5 J to meet European unlicensed limits.
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