Monday, 2 April 2018

The Light Infantry Division:The Quarter Inch Rifle




The Quarter Inch Rifle shall be the standard personal weapon of the Light Infantry Division,the rest of the British Army,the Royal Navy and the Royal Marines.



The Three Eighths Inch Carbine and Pistol shall be issued in lieu of the Quarter Inch Rifle only where there is a specific need for a weapon which is shorter or lighter or which fires special ammunition types.  



The Quarter Inch Rifle shall be:a semi automatic,gas driven weapon;three feet long,of "bullpup" configuration;with a heavy,twenty four inch long,free floating,fluted barrel,with one in seven rifling;ambidextrous controls and ejection;lightweight receiver,reciprocating parts and furniture and an integrated moderator.



The complete Quarter Inch Rifle system shall weigh twenty five pounds and shall include:a Quarter Inch Rifle;sling;cover;moderator;one to eight magnification day scope;clip on thermal imager;non magnetic multitool (bayonet,knife,mine probe,wire cutter etc.) and scabbard;pouches for six magazines;operator's kit (lubricant,cleaning rod,brushes,batteries,dope cards,ballistics tables etc.);seven thirty round polymer magazines and two hundred and ten rounds of quarter inch by two inch ammunition.



Photo: Original photo by Pvt. Bob Bailey United States Marine Corps modifications by Grand Logistics


The day scope shall have a red dot reticle in the second focal plane which shall subtend an angle of two minutes of arc (or alternatively one half a milliradian) which is roughly equivalent to the height of a man's head at a quarter mile range or the width of a man's torso at a half mile range and can therefore be used as a crude range finder.


The day scope shall have variable,between one and eight times,magnification and a grid type reticle in the first focal plane,which is inherently more flexible than a bullet drop compensation reticle. 



The day scope shall be used with the Quarter Inch Rifle,the Three Eighths Inch Carbine,the Three Inch Mortar and the Six Inch Rocket.



The Quarter Inch Rifle shall be chambered in the quarter inch by two inch cartridge,five of which shall weigh as much as four 7.62x51mm cartridges or eight 5.56x45mm cartridges.



The Quarter Inch Rifle shall fire a one hundred and fifteen grain* copper and steel bullet with a G7 ballistic coefficient of 0.3 at three thousand feet per second from a twenty four inch barrel with a one in seven twist rate.


Within a range of a quarter mile,the bullet shall not be more than eight inches above or below the line of sight allowing rapid,point and shoot,engagements at the most common combat ranges.



At a range of half a mile hold over shall be no more than twice a man's height,which is small enough to allow rapid,intuitive adjustment. 


The Quarter Inch Rifle shall exceed the armour penetrating abilities of both 5.56x45mm and 7.62x51mm weapons due to it's higher impact energy,a consequence of superior external ballistic qualities.


The Quarter Inch Rifle shall be able to fire at least one thirty round magazine per minute for at least seven minutes without overheating,at an ambient temperature of at least sixty degrees Celsius.



The Quarter Inch Rifle shall replace the L85A2/3 Individual Weapons.



The Quarter Inch Rifle shall replace the L86A2/3 Light Support Weapons.



The Quarter Inch Rifle shall replace the L98A2 and L103A2 cadet rifles.



The Quarter Inch Rifle shall replace the L108A1 and L110A2/A3 Light Machine Guns.



The Quarter Inch Rifle shall replace the L96A1 and L118A1 sniper rifles.



The Quarter Inch Rifle shall replace the L119A1/A2 carbines.



The Quarter Inch Rifle shall replace the L129A1 Sharpshooter rifles.

*This cartridge was originally intended to fire one hundred and twenty grain all copper Ball and copper,titanium and tungsten Armoured Piercing Incediary (A.P.I.) bullets but the one hundred and fifteen grain bullet weight is more suited to cheaper but lower density steel and copper bullets.

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