looking for feedback on imperial defence m4 carbine

i have just purchased 2 of these puppies for about $1100 U.S. a piece, they seem well built and are military grade… i know that the die hards prefer U.S. built, but anyone out there fire one of these yet? and lastly, anyone know if i will have problems with accessories and upgrades?

here’s the info on them

http://www.imperialdefence.co.uk/m4_carbine.php

MG4A5 and MG4A6 Carbines.

The IDS MG4A5 and MG4A6 are lightweight, gas operated, air-cooled, magazine fed, selective fire rate, shoulder fired weapon with a collapsible stock. The Barrel is made by the Precision Cold Forging process for greatly increased life and improved accuracy. Bore and chamber
are hard chrome plated for extra life and resistance to corrosion. The MG4A5 and MG4A6 both provide the individual soldier operating in close quarters the capability to engage targets at extended range with accurate, lethal fire. Parts interchangeability with the M16A2 exceeds 80%.

Specification MG4A5
MG4A5 5.56 mm carbine shown with optional accessories (IDS)

Type
Selective fire carbine
Safe / Semi / Automatic
Safe / Semi / 3-burst (option)
Calibre 5.56 mm (.223 in)
Rifling Twist 1/7 or 1/9
Barrel length 368.3 mm (14.5 in)
Barrel types M203 compatible Options: Fluted: Heavy
Ammunition 5.56 x 45 mm NATO, M855 / SS109
Magazine 20 or 30-round detachable box
Action Gas-operated, rotating bolt
Length 788 mm (31.02 in) (stock retracted)
885 mm (34.8 in) (stock extended)
Weight 2.52 kg (5.56 lb) empty;
3.0 kg (6.6 lb) w/ 30 rounds
Rate of fire 700–950 round/min
Muzzle velocity 905 m/s (2,970 ft/s)
Effective range 600 m (area target)
500 m (point target)
Upper receiver Picatinny rail
Forends Reinforced Polymer Option: Aluminium Tactical Picatinny Rail
Buttstock Telescopic, 6 position
NSN 1005 99 867 8606

Specification MG4A6

Type Selective fire carbine
Safe / Semi / Automatic
Safe / Semi / 3-burst (option)
Calibre 5.56 mm (.223 in)
Rifling Twist 1/7 or 1/9
Barrel length 266.7 mm (10.5 in)
Barrel types Fluted
Ammunition 5.56 x 45 mm NATO, M855 / SS109
Magazine 20 or 30-round detachable box
Action Gas-operated, rotating bolt
Length 685 mm (27.0 in) (stock retracted)
785 mm (30.9 in) (stock extended)
Weight 2.52 kg (5.56 lb) empty;
3.0 kg (6.6 lb) w/ 30 rounds
Rate of fire 700–950 round/min
Muzzle velocity 905 m/s (2,970 ft/s)
Effective range 600 m (area target)
500 m (point target)
Upper receiver Picatinny rail
Forends Reinforced Polymer Option: Aluminium Tactical Picatinny Rail
Buttstock Telescopic, 6 position
NSN 1005 99 968 5033

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