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Ballistic sunglasses or prescription eyeglasses must meet the same requirements. In brief, the U.S. military standard requires that ballistic eyewear must be able to withstand up to a 3.8 mm (.15 caliber) projectile at 195 m/s (640 ft/s)) for spectacles and 5.6 mm (.22 caliber) projectile at 168–171 m/s (550–560 ft/s) for goggles.
The U.S. military standard (MIL-PRF-31013), requires (at a minimum) that ballistic eyewear can always withstand a 0.15 caliber, 5.8 grain, T37 shaped projectile at a velocity of 640 to 660 feet per second (approximately 3.8 mm 0.376 g at a velocity of 195 – 201 m/s). Goggles are required to stop a 17-grain fragment simulating projectile ...
GI glasses are eyeglasses issued by the American military to its service members. Dysphemisms for them include the most common " birth control glasses " ( BCGs) and other variants. At one time, they were officially designated as regulation prescription glasses ( RPGs ). [citation needed] This was commonly said to mean "rape prevention glasses ...
These can be compatible with the standard issue hydration pack, similar to CamelBak brand packs. Plastic 1-quart canteens are issued as well, with a metal canteen cup and stand. Several types of eye protection are offered, including ballistic goggles and sunglasses made by Eye Safety Systems, Inc. and Wiley X, and are available with ...
Bulletproof glass of a jeweler's window after a burglary attempt. The Mona Lisa behind bulletproof glass at the Louvre Museum. Bulletproof glass, ballistic glass, transparent armor, or bullet-resistant glass is a strong and optically transparent material that is particularly resistant to penetration by projectiles.
The Advanced Combat Helmet ( ACH) is the United States Army 's current combat helmet, used since the early 2000s. It was developed by the United States Army Soldier Systems Center, [ 2] the U.S. Army Special Operations Command, [ 3] and the U.S. Army Research Laboratory [ 4] to be the next generation of protective combat helmets for use by the ...
Mach 3.5. FIM-92 Stinger. Infrared homing. Mach 2.54. MIM-104 Patriot. Command midcourse and. Terminal Semi-active radar homing. Mach 5.
The AN6531 Comfort Cable aviator sunglasses frame kept being issued by the U.S. military as No. MIL-G-6250 glasses after World War II with different lenses as Type F-2 (arctic) and Type G-2 aviator sunglasses but fitted with darker lenses until their substitute the Type HGU-4/P aviator sunglasses became available in the late 1950s.