Compare Custom Size Motorcycle Helmet from Renowned Manufacturer Under The Bodhi Tree US $90-140 50 PiecesHelmets are typically intended only to protect against shrapnel, ricochets and bullet grazes. The U.S. Army Personnel Armor System Ground Troops (PASGT) helmet [1] has 29 layers of Kevlar [2], which is commonly known as a component of bullet-proof vests, but was reported to have not successfully withstood the impact of bullets of typical size:In a demonstration of the Heckler & Koch MP7 on the Discovery Channel show Future Weapons, a PASGT helmet suffered a catastrophic armor penetration when hit head-on with one round of the MP7's 4.6x30mm ammunition. Similarly, the firearms testing site The Box o' Truth has reported that a 7.62x25mm Tokarev fired from a ČZ vz. 52 handgun was able to penetrate the helmet at 25 feet (7.6 m). In the same test, both the 5.56x45mm NATO and the 7.62x39mm were able to yield catastrophic penetrations through both sides of the helmet. [1]5.56x45mm NATO [3] is the cartridge used in the M16, one of the most common standard-issue combat rifles in armies around the world.

7.62x39mm [4] rounds are used by, among others, General Purpose Machine Guns [5]. Together these rounds would constitute up to 90% of infantry fire - clearly the helmet would not protect a soldier from a direct hit to the head in a typical gunfight. A helmet that is bulletproof would be much heavier, making it that much more uncomfortable for a soldier while adding little more protection - a soldier's face and lower half of the back of his/her head is completely exposed, so s/he remains highly vulnerable. A helmet that covers more of the head would only limit breathing and/or removal of heat. Soldier comfort is prioritized in this particular aspect of military equipment design; heavy vests and gear you can get used to, but keeping a clear head is difficult enough in combat without feeling blazing hot and dizzy under a stuffy heavy helmet. The head is generally a difficult and rare target (except for snipers) so the compromise on armor is a calculated one.EDIT: As User points out, an important but often overlooked purpose of the helmet is to protect the soldier's head from knocks and falls, which are common in any vigorous physical sport or activity and especially in combat maneuvers.

A relatively thin but rigid helmet that absorbs impact can make a world of difference in minimizing head injury.[/wiki/Gen...In the Unites States, yes, they are. As of October, 2014, the US Army and Marine Corps are fielding the Enhanced Combat Helmet, which did so well in tests a new testing system had to be built to determine the integrity of the helmet, as the old system wasn't capable enough.motorcycle rolling chassis for sale ukThe new ECH is lighter than the older helmets, the Advanced Combat Helmet, and offers considerably more protection. indian motorcycle war bonnet for saleThey will stop a .30 caliber round, as well as protection against all small arms fire and fragmentation. michigan motorcycle helmet law 2012

The newest USA helmet is made of Ultra High Molecular Weight Polyetheline (UHMWPE). It can stop a close range, direct hit from an M-16 round (5.56mm) or a 7.62x51 (.308 rifle such as M-14).The older kevlar helmet could only stop pistol bullets (9mm, 45 acp etc). motorcycle shops near hamburg paTo illustrate how remarkable this is, the M-16 round has 5 times the kinetic energy of the pistol bullets. The 7.62x51 has 7 times the kinetic energy of the pistol rounds. This is a revolutionary upgrade in troop protection.I wish I had a link to share, maybe later I can find the article I read it in.Another interesting use of UHMWPE is in humans, as half of the artificial articulating surface used in joint replacements (hip, knee, shoulder).Why does it work? Incredible resistance to shear forces. UHMWPE is made of hydrocarbon molecules that are 100,000 carbon atoms long, all mixed together.To make them even stronger, the molecules can be crosslinked wherever they touch.

Imagine thousands of long pieces of string jumbled together. Hard enough to imagine pushing a basketball through that. Now make it more difficult, and tie the strings together whenever they touch. Now try pushing your basketball through.That is probably what it's like for a bullet trying to “push” through UHMWPE.Too many negatives in the answers below eh? Let me make your day by saying yes, there exists a headgear  that was built to be bullet proof and not just the odd "9 mm at an angle" either but a full powered 7.62 mm AK round! Refer to the image below: ​That's an Indian Army soldier from the Rashtriya Rifles. The particular helmet/headgear is called a "Patka" designed by Maj.Gen Vijay Kumar Datta and battle proven in the Kashmir Valley. Here is a newspaper article corroborating the same: Bulletproof headgear against AK-47s | Latest News & Updates at Daily News & Analysis. The Great America Ballpark Tour on an American MotorcycleNow he works for Michigan-based Armor Express and sells the same brand of bulletproof vest that saved his life.

But only to cops. He doesn't think civilians should have them. He said that criminals who wear bulletproof vests "change the whole dynamic" for cops, who are trained to shoot at the torso, because it's a large target with vital organs. Cops going up against an armored criminal "would have to shoot him in the head," said Murphy. The head is a more difficult target to hit. Murphy ought to know. He's riddled with scars from the 2012 shooting. "I was shot ten times in the appendages," said Murphy. He pulled up his sleeves to reveal bullet-pocked arms. One of his fingertips was shot off. He said that three of the shots hit his torso and would have been fatal, but they were stopped by the Armor Express vest. He was exhibiting the product at the SHOT Show, the annual conference of the National Shooting Sports Foundation. Isaac Hatch, co-founder of HWI Inc. in Centennial, Colorado, was showing a different sort of body armor. It's a suit called the Elite Defender -- riot armor with breast and groin plates, arm guards, warrior boots and a visor helmet.

Hatch said he's received 1,000 pre-orders from various police departments. Orders for his armor have been on the rise since the riots of Baltimore, Chicago and Ferguson, Missouri, Hatch said. Unlike Armor Express, it's not even bullet-resistant but designed for riot-style weapons like bricks and bottles. Hatch dons the armor and tests it with help of his brother, co-founder Clinton Hatch, who beats him with a bat. "My brother's no Barry Bonds, but he swings pretty hard," said Hatch. Armor Express and the Hatch brothers have never sold a suit to a civilian. But they could, if they wanted to. Cops have been concerned about criminals wearing bulletproof armor ever since the infamous Los Angeles bank robbery of 1997, when two armored gunmen turned North Hollywood in a war zone. Outgunned cops broke into a gun store to try and get firearms that could pierce the gunmen's body armor. They killed one of them by shooting him in the head. The other died in custody. Federal law prohibits people convicted of violent crimes from possessing body armor.

But local armor laws are relatively loose and vary widely around the country. New York state, including New York City with its restrictive gun laws, allows civilians to wear bullet-resistant vests so long as they're not committing a violent felony. Connecticut is probably the most restrictive state for bulletproof vests; it doesn't allow convicted felons to wear them. Also, Connecticut does not allow online sales of body armor to civilians without a face-to-face transaction between the buyer and the seller. But generally speaking, civilians in most states are free to buy bulletproof vests from online retailers like Armor Protection Technologies and BulletSafe. Prices range from $299 to $525. "It's very much wide open," said Rafael Hernandez, co-owner of Armor Protection Technologies in Weston, Florida, who just started shipping vests last year and says there are virtually no regulations. "There's a huge market out there." Tom Nardone, president of BulletSafe, which sells a bulletproof baseball cap for $129, called the Connecticut law "misguided."