Mars pistol: The first pistol with the magazine located under the chamber.
I recently wrote about the new Boberg XR9 pistol which features the magazine beneath the chamber. Dr. StrangeGun discovered that the Gabbett-Fairfax Mars pistol was the first pistol to feature this configuration.

High tech and ugly (Photo from Horst Held)
From wikipedia:
The Mars Automatic Pistol was a semi-automatic pistol developed in 1900 by the Englishman Hugh Gabbet-Fairfax. It was manufactured by Webley & Scott and distributed by the Mars Automatic Pistol Syndicate. The Mars Automatic Pistol is famous for being available in a variety of 8.5 mm, 9 mm and .45 calibres. These were all bottle shaped cartridges with a heavy powder loading, making the .45 version the most powerful handgun in the world for a time. It used a unique long recoil rotating bolt action which ejected spent cartridges straight to the rear.
The Mars Automatic Pistol was rejected by the British War Office as a possible replacement for the Webley & Scott Revolver, then in service with the British Army, because of the unacceptable large recoil, muzzle-flash, and mechanical complexity. It has since become a collectors item because of its rarity and as an example of the earliest developments in semi-automatic pistols.
I dug up the pistols’ patent. The patent drawings show how the rear ward feeding works.
Although the pistol was not practical back in 1900 it was an ingenious design.


I can remember reading a old war office report on the Webley-Mars. The lines that stuck in my mind, in respect of it’s recoil, were that: “No man on firing this weapon, would willingly fire it again.”
Quite an interesting firearm, there’s an entry on it in “Gun: a visual history”.
It says:
Perhaps inspired by the Mauser’s success, Hugh Gabbett-Fairfax wanted to produce a super-powerful pistol; the result was the Mars. Described by users as “a nightmare,” it was complex, awkward, and unwieldy, with a vicious recoil.
As a side note to the ammunition it mentions that “The designer insisted on a heavy propellant load for the Mars bullet.” it seems like it was the Desert Eagle of it’s day.
Dusty, thanks for the info
No problem, it’s quite a nice book. ^^
was reading a few articals on mars
pistol looking for a picture for
my p.c.
i found no comments on the fact the
this in operation both the barrel and
receiver moved , receiver back
barrel forward, so they could
use long shells.
see page 411,412 boothroyd
hand gun.
james o cox
yeah I have that book and always wanted to know more about the mars.
very nice research but hand loaders probably could achieve at least similar ballistics in a 45lc.
it looks like a nightmare to clean and maintain, esp with magnum loadings and unjacketed ammunition.