Waffenschrank.app

Air & spring

Hämmerli AR20

Hämmerli AR20 — documented specs: caliber 4.5 mm (.177), barrel length 500 mm (19.69 in) (AR20 PRO), overall length 1,058–1,109 mm (41.65–43.66 in), muzzle energy at most 7.5 J (5.5 ft-lb) (AR20 PRO). The source for each figure is listed below the specs (catalog as of 10/16/2026).

Category
Air & spring
Era
Present (from 1991)
Origin
Germany

Also known as: AR20 PRO


Specifications

Action
Pre-charged pneumatic
Sights
Aperture sight
Barrel length
500 mm (19.69 in) · AR20 PRO
Overall length
1,058–1,109 mm (41.65–43.66 in)Depending on variant · stock length adjustable
Muzzle energy
at most 7.5 J (5.5 ft-lb) · AR20 PRO

Sources

Specifications come from the source cited alongside them; counts are based on our catalog as of the date stated. Not legal advice: what follows from these figures in a given country is decided by that country’s law. Waffenschrank is not affiliated with the manufacturers named.



Other models in 4.5 mm (.177)

Models from other manufacturers in the same caliber, drawn from the catalog in no particular order — not a recommendation and not a comparison of specs.


Related

Catalog as of