5,56×45 -SS109 NATO Linked M27 metal

5,56×45 -SS109 NATO Linked M27 metal


Small-caliber ammunition NATO Ball
62-grain linked
5.56 mm Ball cartridge

The 5.56 × 45 mm NATO Ball is a 62-grain cartridge developed for reliable performance, consistent precision, and effective operation under demanding environmental conditions. This configuration is supplied on M27 disintegrating metal links for compatible belt-fed weapon systems.

62 gr / 4.00 g
M27 disintegrating links
NATO STANAG 4172
Non-corrosive Boxer primer

Engineered cartridge construction

The projectile combines a CuZn10 jacket, a 35B2 steel penetrator, and a lead-antimony rear core. A sealed CuZn30 case, double-base propellant, and Boxer primer support reliable operation and storage.

01

Composite projectile

CuZn10 jacket, 35B2 steel penetrator, and a lead-antimony rear core containing 2.2% antimony.

02

M27 linked supply

Supplied on M27 disintegrating metal links for compatible 5.56 mm belt-fed weapon systems.

03

Sealed ignition system

Non-corrosive, non-mercuric Boxer primer with waterproof sealing at the primer joint and case mouth.

04

NATO qualification

Qualified to NATO STANAG 4172 and evaluated under the listed performance and environmental conditions.

Caliber5.56 × 45 mm NATO
Ammunition typeBall
LinkingM27 disintegrating metal links
Total length57.40 mm (-0.70)
Total weight11.85 g (±0.45)
Bullet weight62 gr / 4.00 g (±0.10)
Bullet length23.10 mm (±0.20)
Bullet extraction≥200 N
Case length44.70 mm (-0.25)

Bullet typeBall
Bullet jacketCuZn10
Perforating core35B2 steel
Rear coreLead-antimony alloy containing 2.2% antimony
Case materialCuZn30
PropellantDouble-base, smokeless
PrimerBoxer percussion
Primer propertiesNon-corrosive and non-mercuric
WaterproofingCase mouth and primer joint sealed

Velocity at 24 m911 ±15 m/s at 21°C
Muzzle energy≥1,564 J
Bullet energy at 24 m≥1,480 J
Precision at 550 mHorizontal and vertical standard deviation ≤200 mm
Trajectory match at 300 mVertical ≤125 mm; horizontal ≤175 mm
Trajectory match at 500 mVertical ≤275 mm; horizontal ≤385 mm
Terminal-effect distance570 m
Perforation result≥90%
Test plate3.5 mm mild steel, SAE 1010/1020
Aluminum witness screen0.5 mm 2024-T3, positioned 0.5 m behind the steel plate

Reference temperature21°C
High temperature+52°C
Low temperature-54°C
Case-mouth pressure at 21°CP + 3SD ≤4,450 bar
Port pressure at 21°CP – 3SD ≥1,030 bar
Action time at -54°CT + 5SD ≤3 ms

Additional qualification tests
Primer sensitivity
Test ball diameter30 mm
Test ball weight111.7 ±0.57 g
H + 5SD≤450 mm
H – 2SD≥75 mm

Waterproof test
Vacuum pressureMinimum 50 kPa
Test durationMinimum 30 seconds
Permitted resultNo more than 15% leaky rounds

Compliance and qualification
NATO STANAG 4172
AC/225 (LG/3-SG/1) D/8
PFP (NAAG-LG/3-SG/1) D(2004)1

Qualification and acceptance remain subject to the contracted specification, lot documentation, inspection requirements, and applicable customer approvals.

Controlled supply and published test data

Supply is limited to authorized governmental, defense, and industrial customers and remains subject to contract, technical qualification, applicable legislation, export and import licenses, approved end use, transport, and storage requirements. Published values apply to specified test conditions and may vary with weapon, barrel, ammunition lot, and environment.

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