Engineering:IWI Jericho 941

Jericho 941
Jericho 941
	Jericho 941F
Type	Semi-automatic pistol
Place of origin	Israel
Service history
Used by	See Users
Production history
Manufacturer	Israel Weapons Industries ; Magnum Research ; Kahr Arms
Produced	1990-present
Variants	See Variants
Specifications
Cartridge	9×19mm Parabellum; .40 S&W; .41 Action Express; .45 ACP;
Action	Short recoil
Feed system	16 (9mm) 12 (.40 S&W) 10 (.45 ACP) round Detachable box magazine
Sights	Fixed (Combat), or optional fully adjustable, or optional illuminated night sights.

The Jericho 941 is a double-action/single-action semi-automatic pistol developed by Israel Military Industries (now: Israel Weapon Industries) that was launched in 1990.

It was first imported into the US in 1990 by K.B.I., Inc. of Harrisburg, Pennsylvania. It was later imported by O.F. Mossberg & Sons and named the Uzi Eagle and by Magnum Research, Inc. as the Baby Eagle until the end of 2008. Some pistols from Magnum Research are marked Desert Eagle Pistol. Despite these names being used in the US market, the Jericho 941 is not related to the IMI Desert Eagle other than its manufacture and design by IMI, and bears only a slight cosmetic resemblance to the larger pistol. From January 2009 until they ceased business in January 2010, K.B.I., Inc. (which also imported Charles Daly firearms) imported the handgun as the Jericho. Magnum Research, now a division of Kahr Arms, announced a renewed importation of the Jericho.

In December 2014, IWI US, Inc. announced they would begin importing both the steel and polymer versions of the Jericho 941 in early 2015.^[1]

Design and features

The original Jericho 941 was modeled on the well-respected CZ-75 pistol designed and produced by Česká zbrojovka (CZ) of the Czech Republic and built using parts supplied by the Italian arms house Tanfoglio, which had been making their own CZ-75 clones. Using a well-tested design allowed IMI to avoid the teething problems most new pistol designs experience, and subcontracting much of the basic fabrication work to Tanfoglio allowed IMI to quickly and economically put into production a pistol that would have enough Israeli content to satisfy government contract requirements.^[2]

While the R-versions of Jericho 941 feature a combined safety/decocker (the decocking lever also acts as a safety and remains on "safe" when actuated), the decocker version of the CZ-75 (CZ-75BD) features a simple decocker (the pistol is always ready to fire in double-action mode when decocked). The barrel of the CZ-75 is traditionally rifled, while the Jericho 941 features a polygonal barrel, furthermore the Jericho 941 is substantially heavier. These differences translate into substantial differences in the condition in which the gun is carried. Magazines for the CZ-75 and Tanfoglio T95 will function in the Jericho 941.

One innovation by IMI was a new, much "hotter" cartridge, the .41 Action Express (see below) to go along with the Jericho 941. The difference between 9mm and .41 AE is the same as .44 Magnum and .50 AE. The AE cartridges have rebated rims which are the same diameter as the less powerful rounds, but the case is wider, providing more power. This allows these pairs of calibers to be used in the same firearm with only a change of barrel, recoil spring and magazine.^[2]

The .41 AE was less commercially successful than the 10 mm, and was soon discontinued.^[3] Experience with heavily loaded rounds gave IMI a considerable lead, however, in chambering for the soon-to-be successful .40 S&W and also allowed the Jericho to "up-chamber" to the very popular .45 ACP.^[2] The Jericho 941 design has been modified to include accessory rails on the frame for mounting lasers or flashlights, a feature found on many current-generation semi-automatic handguns.

Variants

Steel frames

Mfg. Part No.
	Full-size		Semi-compact			Compact
Caliber	9×19	.40 S&W	9×19	.40 S&W	.45 ACP	9×19	.40 S&W
Israel Weapon Industries*	941 F/R (16/15 rd)	941 F/R (12 rd)	941 FS/RS (16/15 rd)	941 FS/RS (12 rd)	941 FS/RS (10 rd)	941 FB/RB (13 rd)	941 FB/RB (10 rd)
Magnum Research*	MR9900 (10 rd)*** MR9915R (15 rd)	MR9400 (10 rd)***	MR9900RS (10 rd) MR9915RS (15 rd)	MR9400RS (10 rd)	MR4500RS (10 rd)***	MR9900RB (10 rd)***	MR9400RB (10 rd)
Weight**
Pistol w/o magazine	1,000 g (2.2 lb)	900 g (2.0 lb)	900 g (2.0 lb)		1,025 g (2.3 lb)	860 g (1.9 lb)
Magazine empty	90 g (0.2 lb)		90 g (0.2 lb)		100 g (0.2 lb)	85 g (0.2 lb)
Loaded magazine	282 g (0.6 lb)	258 g (0.6 lb)	282 g (0.6 lb)	258 g (0.6 lb)	310 g (0.7 lb)	250 g (0.6 lb)	230 g (0.5 lb)
Dimensions
Overall length	207 mm (8.1 in)		184 mm (7.2 in)			184 mm (7.2 in)
Height	140 mm (5.5 in)		140 mm (5.5 in)			125 mm (4.9 in)
Width	28.575 mm (1.1 in)		28.575 mm (1.1 in)			28.575 mm (1.1 in)
Barrel length	112 mm (4.4 in)		99 mm (3.9 in)			90 mm (3.5 in)
Sight line radius	150 mm (5.9 in)		134 mm (5.3 in)			134 mm (5.3 in)
Optional finishes available. Overall weights may vary due to manufacturing differences and accuracy of scale. **Previously listed on CA Roster of Handguns Certified for Sale.

Polymer frames

Mfg. Part No.
	Full-size		Semi-compact		Compact
Caliber	9×19	40S&W	9×19	40S&W	9×19	40S&W
Israel Weapon Industries*	941 FL/RL (16/15 rd)	941 FL/RL (12 rd)	941 SL/RSL (16/15 rd)	941 SL/RSL (12 rd)	941 FBL/RBL (13 rd)	941 FBL/RBL (10 rd)
Magnum Research	N/A		MR9900RSL (10 rd) MR9915RSL (15 rd)	MR9400RSL (10 rd)	MR9900BL (10 rd)	MR9400BL (10 rd)
Weight**
Pistol w/o magazine	800 g (1.8 lb)		720 g (1.6 lb)		680 g (1.5 lb)
Magazine empty	90 g (0.2 lb)		90 g (0.2 lb)		80 g (0.2 lb)
Loaded magazine	282 g (0.6 lb)	275 g (0.6 lb)	282 g (0.6 lb)	275 g (0.6 lb)	250 g (0.6 lb)	230 g (0.5 lb)
Dimensions
Overall length	207 mm (8.1 in)		192 mm (7.6 in)		185 mm (7.3 in)
Height	138 mm (5.4 in)		138 mm (5.4 in)		122 mm (4.8 in)
Width	38 mm (1.5 in)		38 mm (1.5 in)		38 mm (1.5 in)
Barrel length	112 mm (4.4 in)		96 mm (3.8 in)		89 mm (3.5 in)
Sight line radius	156 mm (6.1 in)		141 mm (5.6 in)		134 mm (5.3 in)
Optional finishes available. *Overall weights may vary due to manufacturing differences and accuracy of scale.

Jericho 941 F with magazine removed

Semi-Compact Polymer BE

The introduction of the Jericho 941 also introduced a new caliber to the market, the .41 Action Express (or .41 AE), which was developed in 1986.^[2] The .41 AE was a unique rebated rim cartridge designed to use .410-inch (10.25 mm) bullets and duplicate a reduced power police loading of the .41 Magnum.^[3] The Jericho originally shipped with two barrels, one for 9×19mm Parabellum and the other for .41 AE. Since the .41 AE was designed with a rebated rim the same dimensions as that of the 9 mm, the extractor and ejector worked equally well for either cartridge.^[2]

Ballistically, the .40 S&W was similar to moderate .41 AE loads (the reloading manuals that list the .41 AE generally say to use .40 S&W data), although commercial loadings of .41 AE were somewhat more powerful than the .40 S&W. With the stronger backing of major American firearms and ammunition manufacturers, the .40 S&W quickly pushed the .41 AE out of the market. The Jericho 941 was only on the market for one year before the dual 9 mm/.41 AE chambering was dropped, and the pistol was sold as either 9 mm or .40 S&W. Some shooters like the Baby Eagle in .40 S&W for its extra reserve of strength, since the Baby Eagle was originally designed for a more potent cartridge (the .41 AE), which is the reverse of some makers who dropped .40 S&W barrels into pistols previously spec'd for the milder 9 mm cartridge and had subsequent barrel and cartridge case failures.

A later compact version, the Jericho 941, was chambered in .45 ACP or 9 mm. It is not clear to what extent the Jericho original .41 AE/9 mm Jericho frame and slide were "built-up" to handle the .45 ACP's much larger diameter; although the .45 ACP is a milder load running at much lower pressures than the .41 AE, the barrel opening for the .45 ACP is, of necessity, much larger. Desert Eagle does not permit the use of +P or +P+ loads per its website FAQ, although reviewers have shot and reported the ballistics on +P .45 ACP defensive loadings.

Initially Jericho pistols used barrels with polygonal rifling, which sometimes produces slightly higher velocity due to better bullet to barrel fit. IWI switched to conventional land and groove rifling from 2005 to 2007.

The Jericho 941 is issued in current service throughout the Israeli Security Forces, and Israel Weapon Industries lost a 1.2 Billion Pesos bid for the Philippine National Police's 60,000 handgun procurement on July 11, 2012.

Israeli Government IMI Jericho 941F's, occasionally available on the US Civilian Surplus Market, are SAO (Single Action Only) versions of the IMI/IWI Jericho 941 models sold new in the US.^[4]^[5] These pistols can appear with either factory SAO triggers, or trigger/frame modifications performed by Israeli Armorers. The Armorer-modified version can be externally identified by an extra roll-pin added in the frame slightly forward of the trigger-pivot (also a roll-pin). This extra roll-pin prevents the trigger from moving forward to the now non-existent DA position within the trigger-guard. The SAO triggers of the Govt. 941's apply to what is commonly known as the "Israeli Method"^[6] of carry, otherwise known as "Condition 3" within the lexicon developed by Jeff Cooper.

Users

Colombia^[7]
Costa Rica^[8]
Dominican Republic
Georgia: Used by army and police.^[9]
Greece^[10]
Hungary: Used by police.
India: Used by Special Forces. ^[11]
Israel: Used by various police and security forces.^[12]
Romania
Serbia^[13]
South Korea: Used by Army and Marine Corps Military Police Special Duty Team^[14]
Ukraine: since September 2009 produced in Ukraine under the name “Fort-21.03”.^[15] Used by Ukrainian police and special forces^[16]
Kenya: Used by The Kenya Police.