5.56 NATO

The 5.56 NATO is a rimless bottlenecked intermediate cartridge family developed in the late 1970s in Belgium by FN Herstal. It consists of the SS109, L110, and SS111 cartridges. On 28 October 1980 under STANAG 4172 it was standardized as the second standard service rifle cartridge for NATO forces as well as many non-NATO countries. Though they are not entirely identical, the 5.56×45mm NATO cartridge family was derived from and is dimensionally similar to the .223 Remington cartridge designed by Remington Arms.

The 5.56 NATO SS109/M855 cartridge (NATO: SS109; U.S.: M855) with standard 62 gr. lead core bullets with steel penetrator will penetrate about 38 to 51 cm (15 to 20 in) into soft tissue in ideal circumstances. As with all spitzer shaped projectiles, it is prone to yaw in soft tissue. However, at impact velocities above roughly 762 m/s (2,500 ft/s), it may yaw and then fragment at the cannelure (the crimping groove around the cylinder of the bullet).These fragments can disperse through flesh and bone, inflicting additional internal injuries.

Fragmentation, if and when it occurs, imparts much greater damage to human tissue than bullet dimensions and velocities would suggest. This fragmentation effect is highly dependent on velocity, and therefore barrel length: short-barreled carbines generate less muzzle velocity and therefore lose wounding effectiveness at much shorter ranges than longer-barreled rifles.

Proponents of the hydrostatic shock theory contend that the shockwave from a high-velocity bullet results in wounding effects beyond the tissue directly crushed and torn by the bullet and fragments. However, others argue that tissue damage from hydrostatic shock is a myth. Critics argue that sonic pressure waves do not cause tissue disruption and that temporary cavity formation is the actual cause of tissue disruption mistakenly attributed to sonic pressure waves.

SS109/M855 NATO ball can penetrate up to 3 mm (0.12 in) of steel at 600 meters.According to Nammo, a Finnish-Norwegian ammunition producer, the 5.56×45mm NATO M995 armour piercing cartridge can penetrate up to 12 mm (0.47 in) of RHA steel at 100 meters.

5.56 NATO

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AR ENHANCED POLISHED FIRE CONTROL GROUP

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Standard single-stage government-style fire control group. This finely polished super slick nickel coated hammer and trigger is substantially smoother than mil-spec. A great economical upgrade.

AR-15 BOLT CARRIER GROUP

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Bolt Carrier Group compatiable with AR-15 and M16 rifles and carbines.

AR15 LOWER PARTS STARTER KIT-BLACK

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A high quality lower parts kit needed to assemble your AR-15 lower. Parts are made in USA! Assembly takes place right here at our new facility in Columbia, SC.

Features black oxide coated hammer and trigger springs.

ENHANCED POLISHED LOWER PARTS KIT

Highlights:

This EPT upgrades the standard combat-style fire control group with a single-stage, target style, fire control group with polished contact surfaces and a electroless nickel coating.

MAGPUL MBUS BACK-UP FRONT AND REAR SIGHTS

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The MBUS Front Sight is adjustable for elevation, the Rear Sight is adjustable for windage.

Compatible with 1913 Picatinny-railed hand guards, specifically on AR-15/M16 platforms.

MBUS FRONT AND REAR SIGHT FDE

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The MagPul Back Up Sight (MBUS) Flip-Up Front Sight is a durable, inexpensive Back Up Iron Sight option specifically tailored for the AR-15 platform. Constructed of high impact polymer, the sights are lightweight, unobtrusive, and capable of withstanding harsh environments and rough handling in the field. The Flip-Up Front Sight is spring loaded, popping up instantly when activated by pressing down on either of its side levers or from the top. The sight remains upright under spring and detent pressure, folding only when deliberately stowed by the shooter or in the case of a jarring impact to prevent damage. The MBUS clamps to any standard Picatinny railed handguard, providing the same height-over-bore as a mil-spec A2 fixed front sight.

The product-improved Gen 2 MBUS Front Sight features a slimmer profile for greater optics compatibility when in the folded position, while the front sight post now incorporates a spring lock for consistent elevation adjustment.

MOE® CARBINE STOCK – MIL-SPEC

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The MOE Carbine Stock – Mil-Spec model (Magpul Original Equipment) is a drop-in replacement buttstock for AR15/M16 carbines using Mil-Spec sized receiver extension tubes. Designed for light, fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation.

The Mil-Spec Model includes a standard 0.30″ thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.

PMAG® 30 AR/M4 GEN M3 BLACK MAGAZINE

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Similar to the MOE® PMAG, the GEN M3 features a long-life USGI-spec stainless steel spring for commonality, a four-way anti-tilt follower, constant-curve internal geometry for reliable feeding, and simple tool-less disassembly for easy cleaning.

PREMIUM CLASSIC LPK BLACK

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A high quality lower parts kit needed to assemble your AR-15 lower. Parts are made in USA. Features black oxide coated hammer and trigger springs.

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