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The Mk 2 cocking piece, CR432, listed for the L42A1 rifle is the same as on the original No.4 Mk 1 (T) but has a modern NATO Stock number, B1/1005-99-961-8206. The front (bent) face is angled at 4...

A sample HXP 1983 ball round I examined was non-corrosive. A useful indication can be obtained by carefully decapping a live round (preferably hydraulically) and exposing the cap composition under...

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Attached is a sketch of the 'Plate, Seating' CR1473.
Material is ordinary mild steel.

The modification looks to me like the standard one made by gunsmiths in the UK to accurise No.4 rifles for shooting at Bisley. Part of the key to this was ensuring that the forend was a really tight...

Thanks to the efforts of 'Guisan' on The Swiss Rifles Message Board Forums
the answer appears to be that the cocking piece has been taken from a .22" conversion. There are different versions of...

It should be quite simple: If and only if the bracket for mounting the trigger is an integral part of the rifle body then the body belongs to a No.4 Rifle Mk2. Early bodies had the lug for the...

I have just acquired a nice Model 1889 Rifle, Serial No. 81523 made in 1892.
The magazine cutoff has the detachable clip to prevent it from being operated but interestingly the cocking piece has...

The drawing for the No.4 Rifle barrel, Mk 1 (5 groove rifling) DD(E) 450/3 should be available from the library at the Royal Armouries, Leeds.

What excess CHS is acceptable depends on a number of factors. particularly the amount of support given by the weapon chamber and the strength and lubrication of the cartridge cases used. As...

The 0.400 datum diameter I quoted for UK military 7.62mm NATO weapons and ammunition is taken from the NATO standardisation drawings which were based on the original American design. All NATO...

I have a 1943 Mk1* 23L1483 bought from Worldwide Arms recently. Sadly this from a batch they obtained last year which have all now been deactivated, but the job has been done quite neatly. The bands,...

UK military headspace dimensions for 7.62mm NATO chambers and cartridges are measured to a datum diameter of 0.4000 inches, nominally mid-shoulder.

You should try the library at the Royal Armouries, Leeds. They inherited all of the material from the MoD pattern Room library and certainly have some of the DD(E) 29A drawings for the Pistol,...

FYI Dimensions from the drawing DD(E) 450/87, Part No. CR285 are:-
OD 0.78"-.005
ID 0.47"+.01
Thickness 0.09"
Material: Mild Steel

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For clarification, the attached extract from the British War Office 'Weapon Training Memorandum' WAR No.1 dated March 1940 is instructive.
The fixed line sight should not be confused with a...

The drawings for this barrel, CR 1470, should be available from the Royal Armouries Library at Leeds without too much difficulty or expense. As they pre-date the privatisation of the Royal Ordnance...

Back in the 1970s the fashion at Bisley was to shoot the No.4 Rifle conversions at long range (900 and 1,000 yards) because its positive compensation was reckoned to be useful in coping with...

Yuk! It would depend on the price, but if it was cheap enough you could replace the ruined magazine, trigger guard, and bolt with spare parts from BDL or GPC (carefully fitting the latter). But you...

Peter: I did see an angled blade recently on a rifle at Detling. I suppose another possibility is that a significant quantity of foresights were produced before the 45 degree chamfer was introduced,...

It looks like a nice rifle with mostly genuine Savage parts. The Mk 1 backsight is definitely not original: it was made at ROF Fazackerly (Liverpool, England). Also the magazine, though numbered up,...

The attached article may be of interest to those who have No.5 Rifles and find that they are shooting low!

As a final addition to this thread, I have been able to look at the relevant drawings.
For Rifle No.4 'Band, lower' has catalogue No. BB8554, drawing No.DD(E)450/2.
Alternative patterns for this...

Don't forget also that component manufacture was farmed out to numerous sub-contractors. For FTR a rifle would be stripped down completely and worn out components replaced whilst others would be...

The original No.4 Rifle bolt drawing is DD(E) 450/7, revised and redrawn on 2-2-1940. This was updated on 21-8-1941 to show a flat at the end of the 0.80" diameter knob, 0.34" from the centre. In...

My understanding is that the problem was with the new 'block, band, foresight' as used on the L39 and Envoy conversions. These were only sweated on and weren't drilled for a retaining pin. (The Envoy...