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Diemaco C7 Assault Rifle

The Diemaco C7 is an assault rifle that was used by the Pathfinder Platoon and Brigade Patrol Troop (BPT). The C7A1 variant was used by British Special Forces.

The C7 is a clone of the M16a2 rifle. Canadian arms company Diemaco (now Colt Canada) developed the rifle for the Canadian military. Small improvements to the original design include a heavier hammer-forged barrel. The C7 fires 5.56x45mm NATO rounds from 30-round magazines in either semi or fully automatic mode.

The C7 was employed by the Pathfinders and BPT between the late-1990s until the mid 2000s. The lack of confidence in the standard issue SA80A1 rifle led these 2 elite units to opt for the C7 which was considered more reliable in the field. The C7 could also be fitted with a battle-proven grenade launcher (the M203), something the SA80a1 could not boast. The M203 gave small patrols the extra clout to fight their way out of trouble, making it ideal for the high risk missions performed by the Pathfinders and BRF.

The C7 eventually fell out of PF Platoon and BPT service due to wear and tear. The newly-upgraded SA80A2 addressed some of the reliability issues of the A1 and and so when their C7s were used up they reverted back to the SA80. Note: The Pathfinders would eventually take up the L119A1 carbine.

c7 diemaco
Diemaco C7 assault rifle

C7 M203 grenade launcher
A Royal Marine with the Brigade Patrol Troop armed with a C7 fitted with a M203 40mm grenade launcher.
Image by Steve Lewis. RN | © UK MOD / Crown Copyright 2002
Used under Open Government Licence


United Kingdom Special Forces (UKSF) used the C7A1 version of the weapon. The C7A1 replaced the fixed rear sight/carrying handle with a rail system that enables the mounting of various scopes.

UKSF adopted the C7A1 at the same times as the L119A1, itself derived from the Diemaco C8SFW carbine. Both were put forward by Diemaco for trials held by UKSF to select a new standard Special Forces Individual Weapon (SFIW). The C8SFW carbine won the contract, beating out the Heckler & Koch G36K and the Sig Sauer SIG 551. Despite UKSF adopting the C8SFW carbine - offiically designated as the L119A1 - as its standard weapon, a number of C7A1s were purchased for UKSF use.[1]

C7A1 rifle
A Candadian Military Policeman armed with a C7A1 assault rifle fitted with a ELCAN C79 Optical sight
By Air Force Master Sgt. Greg Rudl [Public domain], via Wikimedia Commons

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