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5.56 PMC AMMUNITION 62gr 500r

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5.56 PMC for sale
500 rounds 62gr
The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO, fyv-FYV-six) is a rimless bottlenecked intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal. 5.56 PMC for sale
It consists of the SS109, SS110, and SS111 cartridges.
Bullet diameter: 5.70 mm (0.224 in)
Used by: NATO, Japan, South Korea, Taiwan, …

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Description

5.56 PMC for sale

Number of Rounds: 20Caliber: 5.56x45mm NATOBullet Weight: 62 grainBullet Type: Light Armor Piercing (LAP)

Code:26G-LAR-556K

MPN:556K

UPC:741569010122

5.56 PMC for sale

Type Rifle, carbine, DMR, and LMG
Place of origin Belgium
Service history
In service 1980–present
Used by NATOJapanSouth KoreaTaiwan, Australia, other major non-NATO allies
Production history
Designer FN Herstal
Designed late 1970s-1980
Specifications
Parent case .223 Remington (M193)
Case type Rimless tapered, bottleneck
Bullet diameter 5.70 mm (0.224 in)
Neck diameter 6.43 mm (0.253 in)
Shoulder diameter 9.00 mm (0.354 in)
Base diameter 9.58 mm (0.377 in)
Rim diameter 9.60 mm (0.378 in)
Rim thickness 1.14 mm (0.045 in)
Case length 44.70 mm (1.760 in)
Overall length 57.40 mm (2.260 in)
Case capacity 1.85 cm3 (28.5 gr H2O)
Rifling twist 178 mm or 229 mm (1 in 7 in)
Primer type Small rifle
Maximum pressure (EPVAT) 430.00 MPa (62,366 psi)
Maximum pressure (SCATP 5.56) 380.00 MPa (55,114 psi)
Ballistic performance
Bullet mass/type Velocity Energy
3.56 g (55 gr) XM193 FMJBT 993 m/s (3,260 ft/s) 1,755 J (1,294 ft⋅lbf)
4 g (62 gr) SS109 FMJBT 948 m/s (3,110 ft/s) 1,797 J (1,325 ft⋅lbf)
4 g (62 gr) M855A1 FMJBT 961 m/s (3,150 ft/s) 1,859 J (1,371 ft⋅lbf)
4.1 g (63 gr) DM11 FMJBT 856 m/s (2,810 ft/s) 1,796 J (1,325 ft⋅lbf)
4.1 g (63 gr) GP 90 FMJBT 851 m/s (2,790 ft/s) 1,679 J (1,238 ft⋅lbf)

 

5.56 PMC for sale

The development of the cartridge that eventually became the .223 Remington (from which 5.56mm NATO would eventually be developed) would be intrinsically linked to the development of a new lightweight combat rifle. The cartridge and rifle were developed as one unit by Fairchild Industries, Remington Arms, and several engineers working toward a goal developed by U.S. Continental Army Command (CONARC). Early development work began in 1957. A project to create a small-calibre, high-velocity (SCHV) firearm was created. Eugene Stoner of Armalite was invited to scale down the AR-10 (7.62mm) design. Winchester was also invited to participate.115 The parameters that were requested by CONARC:

  • .22 Caliber
  • Bullet exceeding supersonic speed at 500 yards115
  • Rifle weight of 6 lb
  • Magazine capacity of 20 rounds
  • Select fire for both semi-automatic and fully automatic use
  • Penetration of US steel helmet through one side at 500 yards
  • Penetration of .135-inch steel plate at 500 yards
  • Accuracy and ballistics equal to M2 ball ammunition (.30-06 Springfield) out to 500 yards
  • Wounding ability equal to M1 Carbine5

Springfield Armory‘s Earle Harvey lengthened the .222 Remington cartridge case to meet the requirements. It was then known as the .224 Springfield. Concurrently with the SCHV project, Springfield Armory was developing a 7.62mm rifle. Harvey was ordered to cease all work on the SCHV to avoid any competition of resources.

5.56 PMC for sale

Eugene Stoner of Armalite (a division of Fairchild Industries) had been advised to produce a scaled-down version of the 7.62mm AR-10 design. In May 1957 Stoner gave a live-fire demonstration of the prototype of the AR-15 for General Willard Wyman, Commander-in-Chief of CONARC. As a result, CONARC ordered rifles to test. Stoner and Sierra Bullet’s Frank Snow began work on the .222 Remington cartridge. Using a ballistic calculator, they determined that a 55-grain bullet would have to be fired at 3,300 ft/s (1,006 m/s) to achieve the 500-yard performance necessary.5

Stoner contacted both Winchester and Remington about increasing the case capacity. Remington created a larger cartridge called the .222 Special, which was loaded with DuPont IMR4475 powder.5

During parallel testing of the T44E4 (future M14) and the AR-15 in 1958, the T44E4 experienced 16 failures per 1,000 rounds fired compared to 6.1 for the AR-15.5 5.56 PMC for sale

Due to several different .222 caliber cartridges being developed for the SCHV project, the 222 Special was renamed .223 Remington in 1959. In May of that year, a report was produced stating that 5 to 7-man squads armed with AR-15 rifles had a higher hit probability than 11-man squads armed with M-14 rifles. At a 4th of July picnic, Air Force General Curtis LeMay fired the AR-15 and was very impressed with it. He ordered a number of them to replace M2 carbines that were in use by the Air Force. By November, testing at Aberdeen Proving Ground showed that the AR-15 failure rate had  5.56 PMC for sale to 2.5 failures per 1,000 rounds, resulting in the M-16 being approved for Air Force Trials.5

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