5.56 MM BALL Mk N AMMN (SS 109)
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The Cartridge 5.56 mm Ball Mk N is equivalent to 5.56 mm NATO (SS 109) ammunition and are suitable for 5.56 mm standard weapon for firing, which can use 5.56 mm NATO Ammunition or INSAS Ammunition.
 
PHYSICAL CHARACTERISTICS :
(a) CARTRIDGE
Calibre 5.56 x 45 mm
Length 57.4 – 0.6 mm
(b) CASE
Type Rimless, Brass 70:30, Bottle Necked, Boxer
Length 45.0 mm
(c) BULLET
Type Guilding Metal envelope FMJ, Steel Insert and Lead core
Mass 4.0 gm
(d) PROPELLANT Ball Powder Double Base (NG & NC)
(e)

PRIMER

Lead Styphnate base, Boxer type
 
PERFORMANCE CHARACTERISTICS :
(a) Pressure (Radial) 342 Mpa ( Avg ) 356 Mpa (Max)
(b) Velocity at 25 m from standard test barrel 910 ± 10 m/s.
(c) Consistency Mean Figure of Merit at 457 m from standard test barrel 16.5 cm or less
(d) Penetration at 700 mtrs 90% of rounds shall penetrate 3.45 mm NATO standard MS Plate to hardness 95-123 VPN
(e) Action time (Hang Fire) 0.003 second max
(f) Extreme Temperature range -54 to +52 deg C
 
QUALITY :
Various strict quality checks are adopted during manufacture. All the components are proved and inspected separately in empty stages before they are taken for Filling/Assembly.
 
SHELF LIFE :
The shelf life of Ammunition is 15 years.
 
PACKING :
20 Cartgs . are packed in a paper Carton and 40 such cartons in one H2A Box, hermetically sealed.

Box H2A Size- 311 X 156 X 194 mm
 
HAZARD CLASSIFICATION :
Compatibility group S
Hazard Division 1.4
Fire fighting classification 4
 
Contact :
Marketing & Export Division
Ordnance Factory Board
Ayudh Bhawan
Government of India
Ministry of Defence
10A, S. K. Bose Road, Kolkata – 700 001, India.

Tel: 0091-33-2248 9027 / 2248 2103 / 2248 5077-80
Fax : 0091-33-2248 1748/2210 8235
Mail : ofbtrade@dataone.in
http://www.ofb.gov.in