XM-8 Prototype Specifications
Caliber:
5.56 x 45mm NATO
Builder:
Heckler & Koch
Weight:
6.4 lbs (prototype),
5.7 lbs objective
Overall Length:
33.3 inches (carbine stock extended)
Barrel Length:
Assault: 12.5"
Sharpshooter: 20.0"
Compact: 9.0"
Automatic Rifle: 20.0"
Rate of Fire:
Cyclic - 750 rpm
Sustained - 85 rpm up to 210 rounds
Rate of Twist:
1 in 7 inches
Barrel Life:
20,000 rounds mininum
Muzzle Velocity:
3005 feet/second (M855 Ball) with 20" barrel
2675 feet/second with 12.5" barrel
2365 feet/second with 9.0" barrel
Magazine Capacity:
10 or 30 rounds (magazines can be nested together); 100 round drum available
Stock:
5 position adjustable for length
Bayonet Lug:
Yes (12.5 & 20" barrels)
Bipod Interface:
Yes (20" only)
Sighting System:
Fully integrated red dot with laser illuminator and pointer
http://world.guns.ru/assault/as61-e.htm
