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Weapon Name- KAC PDW- 6mm x 35mm
Type- Sub-Machine Gun
Damage- 2L
Range- 75/150/300
Ammunition- 500 rounds per 27.5 lb
Strength Level- 1
Strength Level for firing- 1 for burst, 2 for medium burst, 2 for automatic burst
Special Consideration- +1 To initiative

Round Type- 6mm x 35mm
Over-all length- 690 mm (27.2 in), stock extended, 450 mm (17.7 in), stock folded
Barrel length- 250 mm (10 in)
Weight- 4.5 lbs.
Rate of Fire- 650 rounds/min (600 rounds/min for UMP45)
Feed Mechanism- Detachable Box Magazine
Round Capacity- 30 rounds
Accuracy- 1 MOA
Accessories- Picanty Rail
Quick switch firing mechanism- N/A
Scope/Sights- Picanty Rail
Muzzle Velocity- 2,425 ft/s (739 m/s)
Firing System- Gas-operated, rotating bolt
Miscellaneous/electronic information- As with all personal defense weapons, the KAC PDW is intended to be compact and lightweight (similar to submachine guns), but have a longer useful range (out to the low end of combat rifle ranges, 250–300 m)

Basic Information

The KAC PDW combines new and off the shelf components in its design. The lower receiver, holding the magazine and trigger assembly, is essentially a shortened M16 rifle lower receiver,[2] which makes the basic operating controls familiar to many potential users. The cartridge, upper receiver, and operating mechanism are all new designs by KAC.

The KAC PDW uses a completely side-folding stock, unlike the M16 and M4 designs which have their main operating spring in a tube in the stock, and therefore can only partially telescope, and not fold sideways at all.

The barrel has been lightened with a new dimpling process.

The KAC PDW fires a 6x35 mm cartridge, a full centimeter shorter than the western military standard 5.56x45mm NATO round. The 6mm bullet is slightly wider, and the standard 6x35mm bullet is slightly heavier than the standard 5.56mm bullet (65 grains (4.2 g) versus 62 grains (4.0 g)).[1]

Fired from a 10-inch (250 mm) barrel, KAC claims that the 6x35mm cartridge reaches a muzzle velocity of 2,425 ft/s (739 m/s), slightly faster than the muzzle velocity of a 5.56 mm cartridge fired from a similarly short barrel. The larger diameter, shorter 6 mm cartridge is optimized for these shorter barrel lengths, and would perform less efficiently from rifle-length barrels. The rounds muzzle energy is 831 ft·lbf (1,127 J) versus 792 ft·lbf (1,074 J) for a 5.56 mm bullet, again from the same 10" standard barrel.

There is a discrepancy between the velocity claimed by Knight's for 5.56 mm 62-grain (4.0 g) SS109 NATO ammunition fired from a 10-inch (250 mm) Colt Commando barrel (2,400 ft/s (730 m/s), 792 ft·lbf (1,074 J) energy) and other M-16 manufacturers' stated muzzle velocities (2,627 ft/s (801 m/s), 950 ft·lbf (1,290 J)). In any case the energies and velocities are roughly comparable.

According to a weapon review article [3], the KAC PDW has two gas pistons tapping hot gas from the barrel to operate its mechanism, located on the top left and right sides of the bolt carrier. The single mainspring is located on top, between the two gas pistons.