Weapon Name- CMAR G8A1
Round Type- 6.5mm CT
Over-all length- 31.5 inches
Barrel length- 21.5 inches
Weight- 8.4 lb (3.8 kilograms)
Rate of Fire- 600 RPM
Feed Mechanism- Detachable box magazine
Round Capacity- 30 rounds, 100 rounds
Effective Range- 600 meters
Range- 1000 meters
Accuracy- 1 MOA
Accessories- Picatinny Rails
Quick switch firing mechanism-
Scope/Sights- Picatinny Rails
Muzzle Velocity- 3100 joules - 825 m/s (9.1 grams)
Firing System- Short stroke gas piston
Miscellaneous/electronic information- The firearm is essentially a bullpup Ak-108, utilizing a long stroke gas piston with a forward reciprocating counter balancing system which helps reduce felt recoil, and chambered in the 6.5mm CT cartridge.
Basic Information
The firearm is essentially a bullpup Ak-108, utilizing a long stroke gas piston with a forward reciprocating counter balancing system which helps reduce felt recoil, and chambered in the 6.5mm CT cartridge. The 6.5mm is between the power of the 7.62mm NATO and 5.56mm, having 25% less recoil than the 7.62mm NATO, with a slightly lower velocity and weight. However the cartridge uses a very high BC, giving it very good aerodynamics, and thus a longer range and shorter time to target than the 7.62mm NATO. U.S. special forces utilizing 6.5mm Creedmoor rounds with similiar ballistics found the cartridge had a longer range and higher accuracy, with nearly double the hit probability at long range as the 7.62mm NATO cartridge. The 6.5mm CT round used in the firearm is similiar ballistics to the the 6.5mm Creedmoor, however the 6.5mm CT caseless, using a different cartridge but the same bullet and power levels.
The Ak-108 firing system is similiar to other Ak-47, loing stroke gas piston, except in that it has an additional forward reciprocating piston which helps to cancel out felt recoil, prevent muzzle rise, and make the weapon more controllable in rapid fire, allowing for quick follow up shots. This system uses a recoil-reducing countermass mechanism with two operating rods that move in opposite directions, thereby providing "balance". One operating rod, the upper, has a gas piston facing forward while the lower also has a gas piston. The gas tube at the forward end of the handguard is double-ended to accommodate the two rods. The enlarged gas tube cover of the upper handguard guides both rods in their travel. When the rifle is fired, gas is tapped from the gas port to enter the gas tube, driving the bolt carrier to the rear and the counter-recoil upper rail forward. The critical timing of the reciprocating parts is accomplished by a star-shaped sprocket that links and synchronizes both components, causing both to reach their maximum extension, or null point where forces are exactly equal, at exactly the same instant. The felt recoil is therefore eliminated, enhancing accuracy and assisting control during fully automatic fire. The travel distance of the AK-107 reciprocating parts is less than other Kalashnikov designs, so the cyclic rate is higher at 850–900 rounds/min rather than 600 rounds/min on other AK rifles. However, as the felt recoil is virtually eliminated, the manufacturer claims that accuracy is enhanced, especially during burst fire. An enhancement of 1.5 to 2 times, compared to the original AK-100 series, has been reported
