Name: 20 × 110 mm
Availability: InStock

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Northern Africa

Egypt

Latin America and the Caribbean

Argentina

Brazil

Northern Europe

Norway

Southern Europe

Italy

Spain

Western Europe

France

Switzerland

<h2>Synonyms</h2>20 mm M24 ; 20 mm Hispano-Suiza HS 404/804<h2>Armament</h2>Hispano-Suiza HS404, HS804, Mk II and Mk V guns; US M3, M24 and M24A1 guns; UK Mks 2 and 5; Israel TCM-20 ; Yugoslav M55 guns.<h2>Development</h2>This cartridge was used extensively by the UK and USA during the Second World War and large numbers of these guns are still in use. Both countries produced the same range of cartridges in this chambering as that produced for the Oerlikon guns. The projectiles were exactly the same, only the cartridge case and propelling charge differed.<h2>Description</h2>The ammunition is almost identical to the 20 × 110RB Oerlikon, but the case is a rimless type rather than a rebated rimless. European manufactured ammunition uses Berdan primers, while the US M21 , M21A1 and M21A1B1 cases use a Boxer primer. In post-war years the US Air Force developed electrically primed ammunition in this chambering for use in the M24 gun. It was prominently marked `ELECTRIC' on the side of the cartridge case, and the primer cap exhibits a ring of black insulating material around it. Other nations have adopted electric priming, although the presence of the insulating material is often the only indication. Projectiles resemble those developed for the Oerlikon 20 × 110RB gun. They are notable for having the explosive cavity reduced in diameter at the rear, in order to better resist the crushing action set up by the driving band during its passage up the gun bore. For this reason the tracer recess is smaller.ARGENTINA<h2>Manufacturer</h2>Direccion General de Fabricaciones MilitaresType: HE-T FMK 1 Mod 0: Steel shell loaded 5 g Hexogen; tracer capsule in rear; impact fuzed;percussion primed; 118.7 g; MV 830 m/s. For Oerlikon gunsHE-I FMK 15 Mod 0: Steel shell loaded 4 g of HE-Incendiary material; impact fuzed; electric primed;110 g; MV 950 m/s. For EINC gunsHE-I FMK 7 Mod 0: Steel shell loaded 11 g HE-Incendiary material; impact fuzed; percussion primed;258 g; MV 845 m/s. For HS 404 gunsTP-T FMK 4 Mod 0: Steel shell loaded 5 g inert ballast; dummy fuze; 124.8 g; MV 830 m/s. ForOerlikon gunsTP-T FMK 13 Mod 0: Steel shell loaded 4 g inert ballast; dummy fuze; electric primed; 110 g; MV950 m/s. For EINC gunsTP-T FMK 6 Mod 0: Steel shell loaded 16 g inert ballast; tracer capsule in rear; percussion primed;260 g; MV 845 m/s. For HS 404 gunsBRAZIL<h2>Manufacturer</h2>Companhia Brasileira de CartuchosType: HE-I M74E1: Steel shell with copper driving band and loaded with 11 g RDX; impact fuzedCBC M74E1; 100 g; V 7.5 810 m/s HE-I-T-SD M72E1: Steel shell with copper driving band and loaded with 7 g RDX impact fuzed CBC M72E1. Tracer loaded into the rear of the shell with a heat relay giving self-destruction between 3 - 7 seconds of flight. 101 g; V 7.5 875 m/s TP: Hollow steel shell, flat nosed, no filling; 123 g; V 25 810 m/s TP-T: As for TP but with tracer capsule inserted in rearEGYPT<h2>Manufacturer</h2>Maasara Company for EngineeringType: HE-I: Steel shell, brass case; nose impact fuze. Appears to be based upon the standard OerlikonHE-I round. No detailsFRANCE<h2>Manufacturer</h2>Giat IndustriesType: HE-I: Steel shell containing 14 g HE-I filling as one prepressed pellet of HE, one of incendiarymaterial and a final pellet of HE; MR21 or 16/18 Mle 61 impact fuze; 122 g; MV 840 m/sHE-I: As above but fuzed MR22 short delay impact fuzeHE-I: As above but fuzed MR2028 impact with self-destruction between 2.5 and 9 secondsHE-I-T: Steel shell with 8 g filling composed of one pellet of HE and one of incendiary material;MR212 impact fuze; 128 g; MV 840 m/sHE-I-T: As above but fuzed MR22 short delay impact fuzeHE-I-T: As above but fuzed MR2028 impact with self-destruct between 2.5 and 9 secondsTP: Steel-pointed shell, empty; 132 g; MV 840 m/sTP-T: Steel-pointed shell, part filled inert, remainder filled red tracer; 132 g; MV 840 m/sAP-T: Hard steel-pointed shell, base bored for tracer; 139 g; MV 830 m/sITALY<h2>Manufacturer</h2>Simmel Difesa SpAType: HE: Steel shell loaded HE; self-destroying fuze; 135 g; MV 810 m/sHE-I: Steel shell loaded HE-Incendiary mixture; self-destroying fuze; 135 g; MV 810 m/sAP-I: Steel-pointed shell with incendiary filled ballistic cap; 130 g; MV 815 m/sAP-T: Steel-pointed shot with tracer; 130 g; MV 815 m/sSAP-I: Steel shell loaded HE-Incendiary mixture; reinforced nose impact delay fuze; 135 g; MV 810m/sBL: Target practice round. Steel shell shaped to represent HE shell and fuze, hollow, inert; 130 g; MV815 m/sBL-T: As for BL but with tracer capsule in rear; 130 g; MV 815 m/sTP: Steel shell body, empty; dummy fuze; 125 g; MV 815 m/sNORWAY<h2>Manufacturer</h2>Nammo Raufoss Technology A/SType: MultiPurpose High Capacity Tracer (MPHC-T): Fragmentation and incendiary comparable tostandard 20 mm multipurpose. Optimised penetration capability due to the introduction of a hard corepenetrator. Tracer optimised for HS 404 guns. 120 g; MV 904 m/sSPAIN<h2>Manufacturer</h2>EXPAL SAType: HE-I: Steel shell, filled Hexolite; nose impact fuze Mk 26; 122 g; MV 845 m/sHE-I-T: Steel shell, filled Hexolite; nose impact fuze Mk 26; red tracer with minimum burning time of3 seconds; 122 g; MV 845 m/sHE-I: Steel shell, filled RDX; nose impact fuze Mk 26; 120 g; MV 845 m/sTP and TP-T: The HE-I and HE-I-T projectile bodies filled inert and with inert fuze; 122 g; MV 945m/sSWITZERLAND<h2>Manufacturer</h2>Oerlikon Contraves Pyrotec AGType: HE-I: Steel shell, filled Hexal; nose impact fuze; 122 g; MV 830 m/sHE-I-T: Steel two-section shell, front filled Hexal, rear filled red tracer; nose impact fuze; 122 g; MV830 m/sAP-I-T: Pointed steel shell with Hexal filling and red tracer; base delay fuze; 113 g; MV 965 m/sTP-T: Steel two-section shell body, front empty, rear filled red tracer; dummy fuze; 122 g; MV 830 m/sYUGOSLAVIA , FEDERAL REPUBLIC<h2>Manufacturer</h2>Yugoimport SDPRType: HE-I-T M57 : Steel shell filled TNT or RDX/Al; red trace composition in rear, trace for 3seconds; self-destruction by fuze between 4.5 - 8 seconds; 137 g; MV 850 m/sHE-T M57 : Steel shell filled TNT or RDX/Al; red trace for 3 seconds; self-destruction between 4.5 - 8 seconds; 137 g; MV 850 m/sHE-I M57 : Steel shell filled TNT with central filling of incendiary composition; self-destruction between 4.5 - 8 seconds; 132 g; MV 850 m/sHE M57 : Steel shell filled TNT or RDX/Al; self-destruction between 4.5 - 8 seconds; 132 g; MV 840m/sAP-I M60 : Steel pointed shell filled from the rear with incendiary composition; unfuzed; 142 g; MV840 m/sAP-I-T M60 : As for AP-I but with tracer burning for 3 seconds; 142 g; MV 840 m/sAP-T M60 : Steel pointed shot with tracer cavity in rear; red tracer for 3 seconds; 142 g; MV 850 m/sTP-T M57 : This is the same shell as the HE-I M57 but with the forward section filled inert and with tracer for 3 seconds; dummy fuze; 137 g; MV 850 m/sTP M57 : The same shell as the HE M57 but filled inert; dummy fuze; 132 g; MV 850 m/sTP-T M79: This has the two-section shell of the HE-I M57 ; the front section is filled with flashcomposition, and the rear with tracer composition. An impact fuze is fitted. On striking the target theshell explodes with a bright flash. 137 g; MV 850 m/s. Not for use in cannon: for subcalibre trainingtubes fitted to larger weapons onlyBlank M77 : Polyethylene projectile filled with sintered iron powder. For training and test use in M55 AA guns only. The projectile breaks up in the bore, having provided sufficient recoil force to operate the automatic mechanism. Maximum range of fragments and dust is 65 m from muzzle. The entire cartridge weighs 195 g

The ammunition is almost identical to the 20 × 110RB Oerlikon, but the case is a rimless type rather than a rebated rimless. European manufactured ammunition uses Berdan primers, while the US M21 , M21A1 and M21A1B1 cases use a Boxer primer. In post-war years the US Air Force developed electrically primed ammunition in this chambering for use in the M24 gun. It was prominently marked 'ELECTRIC' on the side of the cartridge case, and the primer cap exhibits a ring of black insulating material around it.

Other nations have adopted electric priming, although the presence of the insulating material is often the only indication. Projectiles resemble those developed for the Oerlikon 20 × 110RB gun. They are notable for having the explosive cavity reduced in diameter at the rear, in order to better resist the crushing action set up by the driving band during its passage up the gun bore. For this reason the tracer recess is smaller. This cartridge was used extensively by the UK and USA during the Second World War and large numbers of these guns are still in use. Both countries produced the same range of cartridges in this chambering as that produced for the Oerlikon guns. The projectiles were exactly the same, only the cartridge case and propelling charge differed. Applications include hispano-Suiza HS404, HS804, Mk II and Mk V guns; US M3, M24 and M24A1 guns; UK Mks 2 and 5; Israel TCM-20 ; Yugoslav M55 guns.

In over a hundred years of continued operation, Simmel Difesa acquired comprehensive knowledge and expertise in the ammunition business, combining the experience of famous European players into a modern and agile company.
Today, Simmel Difesa supplies medium and large calibre ammunition to more than 40 countries worldwide.
Over the time, the company developed its know-how in all ammunition components, from propellants and explosives to metal parts and fuses. Thanks to its experience, Simmel Difesa is able to optimize the components’ integration in order to conceive first-class products.
Simmel Difesa gained a reputation as a leader in naval ammunition, and is now – after decades of successful cooperation – the preferred supplier for Oto-Melara guns. Its in-house capability to design and manufacture advanced proximity fuses led Simmel Difesa to become a world leader on the air defense ammunition market.
Equipped with a powerful and flexible manufacturing infrastructure, and benefitting from the dedication of its highly skilled workforce and a dependable supply chain, Simmel Difesa is able to quickly respond to its customers’ requirements with reliable and high-performance products.

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20 × 110 mm

20 × 110 mm

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