Counterstrike Weapons (IV) – Colt M4A1
Been playing CS 1.5 too much these few weeks 
The Colt M4A1 is a more compact version of the M16, first produced by Colt as the AR-15 in 1959 before being adopted into service during the Vietnam War from 1966 onwards and given the service designation M16. Both the M16 and M4 are still being produced today by Colt and many other companies in various variants (usually with different buttstocks, hand guards, barrels, etc) to update it to modern standards. The M16A4 (top) and M4 (bottom) are shown below.
© Colt
Below are links to three AR-15 variants (selected on basis of aesthetics only)
© Fulton Armory
Fulton Armory FAR-15 Liberator.
© Sabre Defence Industries
Sabre Defense Industries XR15A3 Massad Ayoob Elite (Picture taken from Impact Arms here). Sabre Defense Industries 2007 Catalog is available from here.
© Rock River Arms
Rock River Arms Pro-Series Elite. Catalog also available here.
Other Counterstrike weapons:
(I) – Accuracy International AWM
(II) – Brügger & Thomet MP9 (Formerly Steyr TMP)
(III) – Steyr Aug A3
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Yeah… M16 is the best rifle. Throw away that crappy SAR21 lah.
Cannot lah, everything in SAF must be or at least look more high-tech than our neighbours one …
But seriously, I can’t comment cos my unit is non-combat – I haven’t even seen a SAR-21 first-hand in real life