Doomingsland
25-01-2007, 21:50
DAC.99 Personal Defense Weapon
http://img.photobucket.com/albums/v383/Doomingsland/dac99prototype8cv1-2.png
Pic done by MassPwnage
Design History and Overview
The DAC-91 personal defense weapon proved to be one of Doomingsland Defense Industries' most popular and successful weapons, still used to this day by a number of armed forces and still feared and loathed by police forces due to its concealability, high volume of fire, and ability to easily shread through body armor. However, following the fall from grace of caseless ammunition and electronic operation in the eyes of the Imperial Army, DDI ceased production of the weapons. The legacy of the DAC-91, however, lived on. The highly popular DR-83 series that followed, replacing the DR-31/DAC-91 combo, spawned numerous other weapons based on its versitile design, including the DAC-97 sub machinegun, which ultimately replaced the DAC-91.
However, it could easily be argued that the DAC-91 and DAC-97 were in separate classes of their own in terms of firearms classification: the DAC-91 was a far smaller, more compact design firing a small, high-velocity cartridge, while the DAC-97 was a full-sized sub machinegun firing the same cartridge fired by the Imperium's sidearm of choice, the TDX.
The TDX, a weapon that saw much success on the domestic market, had unspectacular export sales (although the few armed forces that did adopt it purchased millions of the weapons). Market research following this catastrophe clearly demonstrated the DAC-91's success over the TDX' in terms of sales in the role of a sidearm, and this in turn got DDI thinking. While they knew they would most likely would not be able to make a customer of the Imperial military as they have in the past, they were certain that a true, full-blown replacement for the DAC-91 would be successful on both the export military and domestic civilian markets.
Thus, Doomingsland Defense Industries once more threw together an elite team of gun designers to design a brand new PDW. This team, headed by the famous Ioannes Lucasus Aemillianus (responsible for the DR-78, DR-83, DAC-97, and TDX), used both their own experience working on the DAC-91 and other weapons, along with consulting with potential users of the weapon, including counter-terrorist experts, infantrymen, vehicle crew, fighter pilots, police, criminals, and terrorists alike. This gave them an extremely good idea of what was wanted out of a PDW, and continued to consult with these people throughout the development of what would come to be called the DAC-99.
Ironically, the Imperial Air Force showed interest for the project, and ended up adopting it as its standard pilot's sidearm, replacing the TDX in that role. Ultimately, DDI would end up with a weapon somewhat similar in appearence to the DAC-91, but far more streamlined in overall design and operation, creating a suitable replacement for this venerable weapon.
Overall Design
The DAC-99 is an ultra-light weight, compact, air cooled, magazine-fed select fire personal defense weapon chambered for the 4.8x33mm Doomingsland Defense Industries cartridge. At first glance, the DAC-99 seems extremely similar to the DAC-91 in appearance, save for the lighter matte black finish of the DAC-99. Upon closer inspection, one notes that the weapons feature a number of fundamental differences.
The DAC-99 features a high-strength polymer frame. This is to be considered somewhat unusual for a DDI design, as DDI weapons generally utilize a high-quality machined steel frame. However, in this case, it was seen that having a lightweight weapon was of greater importance. The frame itself is constructed of a high-strength polymer-Spectra composite permanently bonded with stainless steel inserts, creating what Doomingsland Defense Industries feels to be one of the strongest polymer frames on the market.
The barrel is cold forged 4150 chrome molybdenum steel, producing an excellent and superbly accurate component. The barrel is threaded, allowing for the attachment of accessories such as flash suppressors and sound suppressors, but the DAC-99 comes out-of-the-box with a flash suppressor/muzzle brake. The DAC-99 also uses high-quality adjustable tritium iron sights The trigger features an ultra-smooth pull, further improving accuracy and making for a much more comfortable weapon to shoot.
The weapon's operation allows for the greatest possible reliability. Using a short-stroke gas piston, as found in its predecessor, the DR-83, the weapon produces superb results in the area of reliability (tests by the Imperial Government put 10,000 rounds through the weapon without a single failure). Unlike most rifles, this configuration is not reliant on a tight fit with the bolt group. Rather, it uses rails along with its recoil spring guide rod and short stroke piston to help keep the carrier in line, while leaving ample room for debris to fall. The weapon also utilizes a counter-piston. The DR-83's recoil reduction system is also utilized, reducing the hitting of metal against metal in the operation of the bolt.
Unlike the DAC-91, the DAC-99's telescoping buttstock does not interfere with the ejection of the magazine, allowing for it to slide backwards when ejected, allowing for easier reloading of the weapon. The DAC-99, unlike the DAC-91, also features a built-in foregrip (the front end of the trigger guard is strengthened, enlarged, and coated in rubber to allow for the shooter to easily grip it), unlike the DAC-91 which required one to be mounted via rails. However, the DAC-99 does possess rails, like its predecessor, mounting four different piccatiny rails for the mounting of accessories (top, bottom, and either side). The DAC-99's pistolgrip is also far more ergonomical and comfortable than that of the DAC-91.
The DAC-99 is also fully ambidextrous. The charging handle, coated in rubber and extending out for easy grip, can be pulled back on either side of the weapon. The magazine release, located near the trigger guard, can also be utilized on either side of the weapon, allowing for the shooter to more easily eject the magazine (upon hitting the magazine release, the magazine's feed is forced upwards and out of the magazine cache via spings; grooves along the top of the reciever allow the magazine to easily slide backwards after that). The DAC-99 also borrows the forward ejecting design of the DAC-97, allowing the weapon to be comfortably fired by both left and right handed shooters.
The forward ejecting configuration is partially due to the DAC-99's bullpup configuration, another trait of the DAC-97. This allows the DAC-99 to have a longer barrel than other comparable PDWs, making for both greater accuracy and lower recoil. Another important selling point of the DAC-99 is its sheer magazine capacity.
The DAC-99 feeds from a one-hundred round helical magazine. Unlike other helical magazine designs by DDI as in the DAC-91 and DAC-97, the DAC-99's magazine design is borrowed from Pwnage Ordnance's BR-1 battle rifle: it utilizes a helical magazine with an entirely mechanical corkscrew shaped helical magazine. When the bolt rotates, a lug strikes a gear operating the screw, which pulls the entire helical stack of rounds in the direction of the bolt and chamber. The first round in the magazine is then extracted, chambered and fired. Without the spring, DAC-99 magazines can be stored loaded for years. This also allows for more room to store even more ammunition because of the lack of a spring, allowing for a more compact high-capacity design.
Cartridge
The DAC-99, as mentioned before, fires the 4.8x33mm Doomingsland Defense Industries cartridge. This is not to be confused with 4.8x33mm Caseless, fired by the DAC-91. This is a high-velocity bottle necked cartridge, much like a scaled-down rifle cartridge. This allows for the round to have superb velocity, and thus excellent penetration of soft body armor.
The rounds small size also means that, in addition to its superb armor penetration, the use of extremely high capacity magazines, as in the case of the one-hundred round helical magazine used in the DAC-99, is easily facilitated. The standard projectile used by the 4.8mm DDI cartridge weighs 30 grains, although lighter and heavier loads can be used. The 4.8mm DDI cartridge is manufactured in a number of different loads and configurations: steel, brass and polymer casings are available, as are Jacketed Hollowpoint, Full Metal Jacket, Frangible, Soft Nose, and other rounds. An all steel, copper-jacketed pointed armor piercing round, however, is the most common of these.
Name- 4.8x33mm Doomingsland Defense Industries
Case length- 33.1mm
Case diameter- 5.36mm
Rim diameter- 5.33mm
Base diameter- 5.36mm
Neck diameter- 4.83mm
Projectile length- 12mm
Projectile width- 4.82mm
Projectile weight- 30 grains
Round length- 37mm
Muzzle velocity- 2,459 feet per second
Specifications
Manufacturer- Doomingsland Defense Industries
Type- Personal Defense Weapon
Caliber- 4.8x33mm Doomingsland Defense Industries (4.8mm DDI)
Muzzle Velocity- 2,400 feet per second
Operation- Short stroke gas piston
Barrel Length- 9.5 inches
Overall Length- 15.3 inches (stock collapsed) 25.5 inches (stock fully extended)
Weight- 1.45kg empty; 2.3kg loaded
Feed- 100 round helical magazine
Rifling- Polygonical
Rate of Fire- 900, 1100 (gas valve allows for adjusting of rate of fire)
Fire Modes- Semi automatic, full automatic
Export Cost- $1,500
http://img.photobucket.com/albums/v383/Doomingsland/dac99prototype8cv1-2.png
Pic done by MassPwnage
Design History and Overview
The DAC-91 personal defense weapon proved to be one of Doomingsland Defense Industries' most popular and successful weapons, still used to this day by a number of armed forces and still feared and loathed by police forces due to its concealability, high volume of fire, and ability to easily shread through body armor. However, following the fall from grace of caseless ammunition and electronic operation in the eyes of the Imperial Army, DDI ceased production of the weapons. The legacy of the DAC-91, however, lived on. The highly popular DR-83 series that followed, replacing the DR-31/DAC-91 combo, spawned numerous other weapons based on its versitile design, including the DAC-97 sub machinegun, which ultimately replaced the DAC-91.
However, it could easily be argued that the DAC-91 and DAC-97 were in separate classes of their own in terms of firearms classification: the DAC-91 was a far smaller, more compact design firing a small, high-velocity cartridge, while the DAC-97 was a full-sized sub machinegun firing the same cartridge fired by the Imperium's sidearm of choice, the TDX.
The TDX, a weapon that saw much success on the domestic market, had unspectacular export sales (although the few armed forces that did adopt it purchased millions of the weapons). Market research following this catastrophe clearly demonstrated the DAC-91's success over the TDX' in terms of sales in the role of a sidearm, and this in turn got DDI thinking. While they knew they would most likely would not be able to make a customer of the Imperial military as they have in the past, they were certain that a true, full-blown replacement for the DAC-91 would be successful on both the export military and domestic civilian markets.
Thus, Doomingsland Defense Industries once more threw together an elite team of gun designers to design a brand new PDW. This team, headed by the famous Ioannes Lucasus Aemillianus (responsible for the DR-78, DR-83, DAC-97, and TDX), used both their own experience working on the DAC-91 and other weapons, along with consulting with potential users of the weapon, including counter-terrorist experts, infantrymen, vehicle crew, fighter pilots, police, criminals, and terrorists alike. This gave them an extremely good idea of what was wanted out of a PDW, and continued to consult with these people throughout the development of what would come to be called the DAC-99.
Ironically, the Imperial Air Force showed interest for the project, and ended up adopting it as its standard pilot's sidearm, replacing the TDX in that role. Ultimately, DDI would end up with a weapon somewhat similar in appearence to the DAC-91, but far more streamlined in overall design and operation, creating a suitable replacement for this venerable weapon.
Overall Design
The DAC-99 is an ultra-light weight, compact, air cooled, magazine-fed select fire personal defense weapon chambered for the 4.8x33mm Doomingsland Defense Industries cartridge. At first glance, the DAC-99 seems extremely similar to the DAC-91 in appearance, save for the lighter matte black finish of the DAC-99. Upon closer inspection, one notes that the weapons feature a number of fundamental differences.
The DAC-99 features a high-strength polymer frame. This is to be considered somewhat unusual for a DDI design, as DDI weapons generally utilize a high-quality machined steel frame. However, in this case, it was seen that having a lightweight weapon was of greater importance. The frame itself is constructed of a high-strength polymer-Spectra composite permanently bonded with stainless steel inserts, creating what Doomingsland Defense Industries feels to be one of the strongest polymer frames on the market.
The barrel is cold forged 4150 chrome molybdenum steel, producing an excellent and superbly accurate component. The barrel is threaded, allowing for the attachment of accessories such as flash suppressors and sound suppressors, but the DAC-99 comes out-of-the-box with a flash suppressor/muzzle brake. The DAC-99 also uses high-quality adjustable tritium iron sights The trigger features an ultra-smooth pull, further improving accuracy and making for a much more comfortable weapon to shoot.
The weapon's operation allows for the greatest possible reliability. Using a short-stroke gas piston, as found in its predecessor, the DR-83, the weapon produces superb results in the area of reliability (tests by the Imperial Government put 10,000 rounds through the weapon without a single failure). Unlike most rifles, this configuration is not reliant on a tight fit with the bolt group. Rather, it uses rails along with its recoil spring guide rod and short stroke piston to help keep the carrier in line, while leaving ample room for debris to fall. The weapon also utilizes a counter-piston. The DR-83's recoil reduction system is also utilized, reducing the hitting of metal against metal in the operation of the bolt.
Unlike the DAC-91, the DAC-99's telescoping buttstock does not interfere with the ejection of the magazine, allowing for it to slide backwards when ejected, allowing for easier reloading of the weapon. The DAC-99, unlike the DAC-91, also features a built-in foregrip (the front end of the trigger guard is strengthened, enlarged, and coated in rubber to allow for the shooter to easily grip it), unlike the DAC-91 which required one to be mounted via rails. However, the DAC-99 does possess rails, like its predecessor, mounting four different piccatiny rails for the mounting of accessories (top, bottom, and either side). The DAC-99's pistolgrip is also far more ergonomical and comfortable than that of the DAC-91.
The DAC-99 is also fully ambidextrous. The charging handle, coated in rubber and extending out for easy grip, can be pulled back on either side of the weapon. The magazine release, located near the trigger guard, can also be utilized on either side of the weapon, allowing for the shooter to more easily eject the magazine (upon hitting the magazine release, the magazine's feed is forced upwards and out of the magazine cache via spings; grooves along the top of the reciever allow the magazine to easily slide backwards after that). The DAC-99 also borrows the forward ejecting design of the DAC-97, allowing the weapon to be comfortably fired by both left and right handed shooters.
The forward ejecting configuration is partially due to the DAC-99's bullpup configuration, another trait of the DAC-97. This allows the DAC-99 to have a longer barrel than other comparable PDWs, making for both greater accuracy and lower recoil. Another important selling point of the DAC-99 is its sheer magazine capacity.
The DAC-99 feeds from a one-hundred round helical magazine. Unlike other helical magazine designs by DDI as in the DAC-91 and DAC-97, the DAC-99's magazine design is borrowed from Pwnage Ordnance's BR-1 battle rifle: it utilizes a helical magazine with an entirely mechanical corkscrew shaped helical magazine. When the bolt rotates, a lug strikes a gear operating the screw, which pulls the entire helical stack of rounds in the direction of the bolt and chamber. The first round in the magazine is then extracted, chambered and fired. Without the spring, DAC-99 magazines can be stored loaded for years. This also allows for more room to store even more ammunition because of the lack of a spring, allowing for a more compact high-capacity design.
Cartridge
The DAC-99, as mentioned before, fires the 4.8x33mm Doomingsland Defense Industries cartridge. This is not to be confused with 4.8x33mm Caseless, fired by the DAC-91. This is a high-velocity bottle necked cartridge, much like a scaled-down rifle cartridge. This allows for the round to have superb velocity, and thus excellent penetration of soft body armor.
The rounds small size also means that, in addition to its superb armor penetration, the use of extremely high capacity magazines, as in the case of the one-hundred round helical magazine used in the DAC-99, is easily facilitated. The standard projectile used by the 4.8mm DDI cartridge weighs 30 grains, although lighter and heavier loads can be used. The 4.8mm DDI cartridge is manufactured in a number of different loads and configurations: steel, brass and polymer casings are available, as are Jacketed Hollowpoint, Full Metal Jacket, Frangible, Soft Nose, and other rounds. An all steel, copper-jacketed pointed armor piercing round, however, is the most common of these.
Name- 4.8x33mm Doomingsland Defense Industries
Case length- 33.1mm
Case diameter- 5.36mm
Rim diameter- 5.33mm
Base diameter- 5.36mm
Neck diameter- 4.83mm
Projectile length- 12mm
Projectile width- 4.82mm
Projectile weight- 30 grains
Round length- 37mm
Muzzle velocity- 2,459 feet per second
Specifications
Manufacturer- Doomingsland Defense Industries
Type- Personal Defense Weapon
Caliber- 4.8x33mm Doomingsland Defense Industries (4.8mm DDI)
Muzzle Velocity- 2,400 feet per second
Operation- Short stroke gas piston
Barrel Length- 9.5 inches
Overall Length- 15.3 inches (stock collapsed) 25.5 inches (stock fully extended)
Weight- 1.45kg empty; 2.3kg loaded
Feed- 100 round helical magazine
Rifling- Polygonical
Rate of Fire- 900, 1100 (gas valve allows for adjusting of rate of fire)
Fire Modes- Semi automatic, full automatic
Export Cost- $1,500