HK 4.6×30mm

The 4.6×30mm (designated as the 4,6 × 30 by the C.I.P.) cartridge is a small-caliber, high-velocity, smokeless powder, rebated, bottleneck, centerfire cartridge designed for personal defense weapons (PDW) developed by German armament manufacturer Heckler & Koch (HK) in 1999. It was designed primarily for the MP7 PDW to minimize weight and recoil, while increasing penetration of body armor. It features a pointed, steel-core, brass-jacketed bullet.

4.6×30mm
From left to right: 4.6×30mm (hollow point), 5.7×28mm, .30 Carbine.
TypePersonal defense weapon
Place of originGermany
Service history
In service2001–present
Used bySee Heckler & Koch MP7 Users
WarsAfghanistan War
Production history
ManufacturerHeckler & Koch
VariantsSee Variations
Specifications
Case typeRebated, bottleneck
Bullet diameter4.65 mm (0.183 in)
Land diameter4.52 mm (0.178 in)
Neck diameter5.31 mm (0.209 in)
Shoulder diameter7.75 mm (0.305 in)
Base diameter8.02 mm (0.316 in)
Rim diameter8.00 mm (0.315 in)
Rim thickness1.10 mm (0.043 in)
Case length30.50 mm (1.201 in)
Overall length38.50 mm (1.516 in)
Rifling twist160 mm (1 in 6.3 in)
Primer typeBoxer small rifle
Maximum pressure400.00 MPa (58,015 psi)
Ballistic performance
Bullet mass/type Velocity Energy
1.7 g (26 gr) Copper-plated steel bullet AP ("combat steel") 725 m/s (2,380 ft/s) 447 J (330 ft⋅lbf)
2.0 g (31 gr) Copper-plated steel bullet AP (DM11, "ultimate combat") 720.0 m/s (2,362 ft/s) 518 J (382 ft⋅lbf)
2.0 g (31 gr) Copper-plated steel bullet AP (DM31) 680 m/s (2,200 ft/s) 462 J (341 ft⋅lbf)
2.7 g (42 gr) FMJ 600 m/s (2,000 ft/s) 486 J (358 ft⋅lbf)
2.0 g (31 gr) Copper-plated steel bullet AP (CPS Black Tip") 735 m/s (2,410 ft/s) 540 J (400 ft⋅lbf)
Test barrel length: 180 mm
Source(s): HK USA HK USA Modern Firearms, Pistol / SMG ammunition Heckler & Koch Products
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