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The .22RF 'Prototype' of the
DeLisle Silenced Commando Carbine
See also the main page for the .45ACP calibre weapon
Designed and built by William Geoffrey DeLisle
Affording De Lisle's personal hand-built sporting carbine the descriptive adjective "prototype" may appear far-fetched,
but this neatly packaged, diminutive, but effective "bunny basher" unwittingly became the seed
for one of the Second World War's most unusual smallarms.
The next two images can be rotated and zoomed, either as initially loaded or full-screen for higher definition.
This carbine was De Lisle's personal concept, and was his adaptation of the ubiquitous
lightweight Browning sporting semi-auto rifle for the purpose, between the wars, of quietly obtaining and putting food on the table.
It was this inventive little carbine from which his WW2 Commando Carbine was eventually developed,.
Hitherto, the only available photographs of this carbine have been two side elevations held by the National Army Museum,
and those few photographs that were included in an article written about Geoffrey De Lisle by Ian Skennerton many years ago,
plus the relevant editions of Skennerton's Small-Arms Identification Series*.
We have used artistic means to generate imagery of the carbine from detail and measurements taken from those photographs.
The carbine was retained by De Lisle for many years after the war,
prior to its eventually finding its way to the Imperial War Museum in London.
It was subsequently passed to National Army Museum for safekeeping,
but sadly, ca. the Millenium, the carbine was no longer to be found at the N.A.M. and its whereabouts are now uncertain.
Before the conversion of the S.M.L.E. to the silenced "Commando" carbine,
as we have said De Lisle designed and built certainly the .22 sporting carbine
in the photos below and, it has been rumoured, possibly a second.
The carbine effectively became the prototype for the .45inch ACP (Auto Colt Pistol) calibre carbine when,
after a need for such a weapon had been recognised at a high level in the clandestine services,
Sir Malcolm Campbell heard of De Lisle's small-bore version, tested it,
and immediately initiated the design and build of a full-bore pistol-calibre version.
DATA TABLE - ALL MEASUREMENTS AS VIEWED |
||
FIREARM |
IMPERIAL |
METRIC |
| Designation or Type : | Silenced carbine |
- |
| Action Type : | Semi-Automatic |
- |
| Nomenclature : | - |
with serial no. |
| Calibre : | .22RF Long Rifle |
- |
| Weight : | lbs. ozs. |
kgs |
| Length - Overall : | inches |
cms |
| Length - Barrel : | inches |
cms |
| Pull : | inches |
cms |
| Furniture : | Walnut |
- |
Rifling - No. of Grooves : |
- |
|
| Rifling - Twist & Direction: | 1 turn in inches - ?H |
1 : ?cms |
| Rifling - Groove width : | inches |
mm |
| Rifling - Land width : | inches |
mm |
Rifling - Groove depth at muzzle : |
inches |
mm |
| Sight - Fore : | - |
|
| Sight - Rear : | - |
|
| Sight - Radius : | inches |
cms |
In Ian Skennerton's excellent publications on the Special Service Lee-Enfields,
he notes that the left-hand side of the Browning action was engraved with the text
"DE LISLE SILENT AUTO"
In fact, photographs held by the National Army Museum in London suggest that the carbine,
once held by them on loan from the Imperial War Museum, has additional engraving.
The definition of their image is not good enough to decipher these markings,
but we show the best close-up that we can process to illustrate the point.
Our best guess is that the upper left-hand section is the text noted above;
but there is further indistinguishable text to the right,
and possibly a serial number centrally placed beneath.
As already mentioned, there has been speculation that De Lisle may at some point have built another of these carbines,
either for himself, or for further trials, but we have nowhere seen confirmation of this.
The De Lisle silenced carbine in .22Rimfire
The carbine was hand built on the action of the famous Browning semi-automatic sporting rifle.
A fairing-piece was added, below the forward part of the action,
possibly structural or to support the rear of the fore-end
and to protect the cocking-piece's modified and protruding operating flange in the ejection port.
It is fastened to the front of the trigger-guard with one screw.
The rifle was especially stocked with high-quality walnut and the fore-end and pistol-grip finely chequered.
The pair of figure-of-eight style split mounting brackets supported a telescope
often reported to be of Periscopic Prism Company manufacture,
as occasionally fitted to the No.1 SMLE sniper rifles used in the First World War.
This would have been quite as expected, although many of these rifles and scopes again saw service in the 1939-45 War,
significant numbers of the P.P.& Co. and Aldis Pattern 1918 telescopes were sold commercially
as war surplus both between the two major conflicts and post WWII.
However, this identification was mistaken, and careful inspection of the photographs,
and comparision with a number of other telescopic sight documentation, indicates the 'scope to be a "Fuess" model.
To demonstrate this we firstly we show an image of the Periscopic Prism Co. telescope on an SMLE sniping rifle.
and now a contemporary advertisement for the Fuess Helio No.3 'scope
and a shot of the Helios 'scope, seemingly identical to that on De Lisle's .22 carbine, fitted to a rifle.
We illustrate two outline and sectioned drawings associated with the specification for
the SMLE based .45 calibre De Lisle carbine and its patent.
This was presumably drawn using a similar moderator design to that of .22RF carbine that DeLisle himself built up,
using the action from an FN Browning take-down .22RF semi-automatic sporting rifle of 'between the Wars' vintage.
An apocryphal tale of one trial of the first DeLisle prototype is that the urgently required new weapon was completed overnight
and taken to the London building of the Special Operations Executive (S.O.E.) first thing the following morning.
Impatient to discover its capabilities, it was test-fired at pigeons on the roof of a building opposite.
So quiet was the report, in the early part of the wartime "rush hour", that there was no reaction from passers-by.
How the pigeons reacted was not reported; and neither is there any indication of concern for the fall of shot.
Allegedly, the carbine was immediately despatched to the continent for further assessment (perhaps even a practical trial),
and further examples ordered on the spot.
However, as with many such anecdotes, there is probably an element of truth in the above story,
but the veracious, and only marginally less thought-provoking version, came from the horse's mouth.
Interviewed by Mr. Ian Skennerton in 1981, William de Lisle related how during early "field-testing" of the suppressed carbines,
they were fired at a large chimney across the road from the Wilkes gunsmith's premises
near Piccadilly where prototyping was taking place*.
The discharges were thereby proven to be "imperceptible" to those passing in the street below;
the possibility of heavy hail notwithstanding!
One should perhaps remember that significant quantities of metal of all types were then falling from the skies over England,
and the odd .45 calibre pistol round on a decaying trajectory, even had it been spotted, may barely have raised an eyebrow.
Health and safety considerations were at the time hardly at the fore-front of general thinking.
* SPECIAL SERVICE LEE-ENFIELDS ... COMMANDO & AUTO MODELS - I. SKENNERTON - Small Arms Identification Series No.3
See also the Enfield Rifle No.4T sniper training rifle
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