Many industries, notably textiles, firearms, clocks and watches, buttons, horse-drawn vehicles, railroad cars and locomotives, sewing machines, and bicycles, saw expeditious improvement in materials handling, machining, and assembly during the 19th century, although modern concepts such as industrial engineering and logistics had not yet been named.

Many small arms are " single shot " firearms: i. e., each time a cartridge is fired, the operator must manually re-cock the firearm and load another cartridge.

Many modern military firearms have a selective fire option, which is a mechanical switch that allows the firearm be fired either in the semi-automatic or fully automatic mode.

Many firearms can go off if the gun is dropped.

Many handloaders customize their cartridges to their specific firearms, usually in pursuit of accuracy: they can assemble precision ammunition using cartridge cases that have been fire formed in the chamber of a specific firearm.

Many had firearms acquired from English and Dutch smugglers, sometimes even from the Spanish.

Many supporters of gun-rights consider self-defense to be a fundamental and inalienable human right and believe that firearms are an important tool in the exercise of this right.

Many gun control opponents point to statistics in advertising campaigns purporting that " approximately 9 or so children are killed by people discharging firearms every day across the US ," and argue that this statistic is seldom accompanied by a differentiation of those children killed by individuals from unintentional discharges and stray bullets, and of those " children ," under the age of majority — which is 18-21 in the U. S .— who are killed while acting as aggressors in street gang related mutual combat or while committing crimes, many of which are seen as arising from the War on Drugs.

Many jurisdictions require PIs to be licensed, and they may or may not carry firearms depending on local laws.

( Many firearms with bores over 0. 50 ", such as 12-gauge shotguns, are exempted from the law because they have been determined to have a " legitimate sporting use ".

Many manufacturers have production firearms that are essentially identical to a military M4, but with a 16 " barrel.

Many, if not most, of the independent gunsmiths in the Mohawk Valley purchased completed ( but not rifled ) barrels from Remington and assembled them into firearms custom ordered by their customers.

Many laws and amendments governing possession and use of firearms have been enacted over the years ; see Firearms Act # United Kingdom for a more complete list.

Many firearms that are Parkerized turn to a light greenish-gray color within a few years, as the coating ages, with the protective coating remaining intact.

Many of the more modern magazine-fed firearms were expressly designed to feed hollow points reliably, but many older and military-derived designs were not.

Many military firearms, especially pistols, were designed to fire only full metal jacket bullet ( FMJ ) ammunition, and will suffer failures to feed with hollow-point ammunition, leaving soft-point ammunition the best choice for non-military defensive purposes in these firearms.

Many firearms ballistics tables and graphs show a rise in trajectory at distances shorter than the one ( far zero ) used for sight-in.

Many countries also have laws restricting civilian ownership of firearms chambered for cartridges also used by military forces which would not apply to the rather obscure. 32 S & W Long.

Many of these artists can only be regarded as " Gunmakers " instead of Gunsmiths, and do repairs only on the very highest grade firearms.

Many names of characters and locations in the series correspond to modern-day firearms and their manufacturers:

Many of these firearms come from gun shops and gun shows in Southwest border states .”

Many drum-fed firearms can also load from conventional box magazines, such as the Soviet PPSh-41 submachine gun, RPK light machine gun and the American Thompson submachine gun.

Many pistol and rifle magazines classified by gun control laws as " high capacity " are the factory standard magazines originally designed for use with their respective firearms.

Many Japanese manufacturers and firms give their employees three to five days off around the 15th of August.

Many manufacturers like Taiyo Yuden use proprietary chemical additives to make more stable cyanine discs (" metal stabilized Cyanine ", " Super Cyanine ").

Many manufacturers, such as Hewlett Packard and Memorex, created 3270 compatible terminals, or adapted ASCII terminals such as the HP 2640 series to have a similar block-mode capability that would transmit a screen at a time, with some form validation capability.

Many manufacturers would replace a product even with one defective pixel.

Many car and engine manufacturers support extended drain intervals, but request extended drain interval certified oil used in that case ; and sometimes a special oil filter.

Many other manufacturers make single-shot pistols, most based on the bolt action rifle, with barrels generally ranging from 10 to 15 inches ( 25 to 38 cm ).

Many ski manufacturers label their skis with the turning radius on the top.

Many Zeppelins had 12-cylinder engines from German manufacturers Maybach and Daimler.

Many more nations became aware of EMC as a growing problem and issued directives to the manufacturers of digital electronic equipment, which set out the essential manufacturer requirements before their equipment could be marketed or sold.

Many UPS manufacturers claim to have the highest level of efficiency, often using different sets of criteria in order to reach these figures.

Many manufacturers of paints, inks, textiles, plastics, and colors have voluntarily adopted the Colour Index International ( CII ) as a standard for identifying the pigments that they use in manufacturing particular colors.

Many printer manufacturers discourage customers from using third-party inks, stating that they can damage the print heads due to not being the same formulation as the OEM inks, cause leaks, and produce inferior-quality output ( e. g. of incorrect color gamut ).

Many of the current manufacturers are using standard off-the-shelf components and are designing upgrade convenience into their products.

Many small aircraft manufacturers serve the general aviation market, with a focus on private aviation and flight training.

Many fountain pen manufacturers have at various times developed their own proprietary cartridges, for example Parker, Lamy, Sheaffer, Cross, Sailor, Platinum, Platignum, Waterman and Namiki.

Many Dobro-style guitars are now hybrid electric guitars, and some manufacturers are adding strings to create 7-and 8-string resonator-style guitars.

Many manufacturers produced jukeboxes, including 1890s Wurlitzer, 1920s Seeburg, 1930s " Rock-Ola " whose name is actually based on that of the company founder, David Cullen Rockola, and Crosley.

Many manufacturers are promoting passive CWDM to deploy fiber to the home.

Many manufacturers also offer monorail extensions, which permit the front or rear standards to move further away from each other, allowing for focus on very close objects ( macrophotography ).

Many cars, boats, and aircraft can accept equipment from different manufacturers, so it is possible to take RC equipment from a car and install it into a boat, for example.

Many manufacturers of personal computers and laptops consider parallel to be a legacy port and no longer include the parallel interface.

Many businesses in Fort Payne accused foreign manufacturers, particularly those from China, of engaging in dumping of socks below cost, to force American companies out of the sock business.

Many PC manufacturers signed up as PS / 2 licensees.

* Many printers manufacturers claim that if any ink cartridges, beyond those sold by themselves, are used in the printer, the warranty of the printer becomes void.