Weapon Name- G3A4 Bullpup
Round Type- 7.62mm x 51mm NATO
Over-all length- 31 inches (787.4mm), 28 inches (711.2mm), 23.622 inches (600mm)
Barrel length- 20.5 inches (520.7mm), 17.5 inches (444.5mm), 13.122 inches (333.3mm)
Weight- 9.5 lb
Rate of Fire- 600 RPM
Feed Mechanism- Detachable Box Magazine
Round Capacity- 20, 25
Effective Range- 600 meters, 500 meters, 300 meters
Range- 800 meters, 700 meters, 500 meters
Accuracy- 1.3 MOA, 1.5 MOA, 2.5 MOA
Accessories- Picatinny Rails
Quick switch firing mechanism- N/A
Scope/Sights- Picatinny Rails, 6x48 Trijicon
Muzzle Velocity- 840 m/s, 800 m/s, 430 m/s, 9.7 grams
Firing System- Roller Delayed Blowback
Miscellaneous/electronic information- Essentially a heavily modified G3 using a roller delayed Blowback mechanism without a rearwards spring bar, being bullpup and accurized.
Basic Information
The weapon is essentially a heavily modified G3, using a roller delayed Blowback mechanism without a rearwards spring bar, being bullpup and based off of the PTR-91's precision design, or accurized for long range use. The Rolley delayed mechanism is known both for it's reliability and accuracy, and has been used in a wide array of weapons, from the MP5 to the H&K33. It is also unusually long and heavy. The weapon is chambered in 7.62mm x 51mm NATO, which is exceptionally powerful compared to most modern combat rifle rounds, such as the 7.62mm x 39mm found in the Ak-47, or the 5.56mm found in the M16. While it is extremely powerful, it also produces substantial recoil, and requires stronger, more robust pieces to handle the resulting shock. The weapon is designed to be a modern equivalent of a battle rifle, with a number of improved features, and being in a shorter, carbine length.
Because of the rear spring bar in the weapon, the roller delayed blowback mechanism in the weapon is unusually long, requiring 15.4 inches of weapon length regardless of the length of the barrel. While this is fairly reasonable for traditionally laid out weapon's, bullpup weapon's gain benefit by removing the stock to reduce the overall length of the weapon, something that would yield little benefit for a standard G3; as a result, the spring bar that guides the bolt assembly backwards has been replaced with a spring acting on the bolt rod, which is used to push the bolt of the weapon rearward. The spring is essentially in the front of the weapon, instead of behind, which removes the unnecessarily long spring bar that typically extends into the stock of the standard G3. This allows the length of the weapon to be shortened drastically, or reduced to carbine length levels, even though the weapon possess a full sized barrel. Based off of the MP5, H&K 33, and G3, the firing mechanism of the weapon is known for both it's accuracy and reliability, despite it's excessive weight and size. It is one of the more accurate mass production firearm used by standard militaries, and it's large, powerful cartridge is also more useful for long ranges, and suitable for DMR, or designated marksmen weapon's.
The barrel of the weapon comes in 20.5 inch, 17.5 inches, and 13.1 inch configurations. It is a 5 groove, right hand twist 1 in 12 inch (304.8mm) fixed barrel, made of stainless steel and given a molybdenum coating, to increase hardness and decrease friction with the bullet, as well as provide higher corrosion resistance. Unlike chrome plating, nitrided barrels have higher heat resistance and a more even coat, which provides higher accuracy and better rapid fire capabilities over standard chrome lined barrel. While the barrel life is reduced, it tends to be more accurate and heat resistant than standard chrome lined barrels. The barrel is also cryongenically treated, which increases it's life considerably. The barrel is polygonal and hammerforged, which increases it's longevity somewhat, and as well produces less friction with the bullet, which increases it's velocity slightly. Compared to Chrome plating, nitriding is a much more uniform process, which leaves substantially less variation in the barrel surface, or less bumps and imperfections, which means a smoother, more precise fit between the bullet and the barrel, which increases accuracy. The Nitriding proccess is the closest fit to the barrel as possible, which while less accurate than a barrel with no coating at all, provides more corrosion resistance than an untreated barrel (and about as much as Chrome), which is important considering a normal barrel would fail under ordinary environmental conditions, such as exposure to water, which can cause various metals to warp or rust. The nitride finish is also more heat resistant than a standard chrome lined barrel, increasing the barrel's durability to heat and thus it's ability to maintain sustained fire in combat. Being much heavier than an ordinary barrel, it's large size naturally serves as a heat sink, which decreases it's temperature in sustained use. However, while Chrome barrels would start to crack or flake if the temperature of the barrel was increased to only a few hundred degrees, the nitrided barrels are capable of much more rapid sustained fire (which increases the heat of the weapon), making the weapon more suitable to harsh combat conditions.
Each barrel possess a muzzle break designed after the surefire muzzlebreak. Though there are numerous ways to measure the energy of a recoil impulse, in general a 10% to 50% reduction can be measured. Besides reducing felt recoil, one of the primary advantages of a muzzle brake is the reduction of muzzle rise. This lets a shooter realign a weapon's sights more quickly. This is relevant for fully automatic weapons. The weapon also possess a hydraulic recoil buffer similiar to that in the M249. The, the design of the weapon and it's straight back recoil impulse, as well as the tighter, more steady grip on the weapon, combined with the impact gel recoil pad, makes the weapon very easy to use and relatively comfortable. The weapon uses a Blackbox round counter that can be hooked up to an LCD screen to show the rounds remaining. The magazines are generally color coded, which provides indication of how many rounds are within each magazine, although loading in another magazine that does not meet the criteria can result inaccurate round counting predictions; the round counter mechanism itself, however, will not falter. The weapon is made from composites and polymers similar to the P90 and XM8, to both reduce the cost and weight as of the weapon, as well increase the durability. The weapon fires from a closed bolt for both maximum accuracy and reliability. The weapon has picatinny rails, and thus an array of different sights are available for the weapon.
A 7.62 NATO round reaches 50 percent of its velocity within 80 mm (3.1 in) of the barrel when fired, which makes it exceptionally powerful even out of short barrels. Despite this, it's bullpup design allows it's barrel to be significantly longer than the average traditionally laid out rifle, giving it higher velocity for a shorter overall length in any case. The barrel of the weapon comes in 20.5 inch, 17.5 inches, and 13.1 inch configurations, meant for standard, carbine, and submachine gun configurations. The velocities for these weapons are approximately 840 m/s, 800 m/s, and 720 m/s.
