Editing M16 rifle (section)

===Diemaco C7 and C8===
{{Main|Colt Canada C7 and C8}}
[[File:Canadian C7A2 Rifle.JPG|thumb|A Canadian soldier fires the current issue C7A2 rifle at the range with a [[C79 optical sight|C79]]A2 sight. This particular example is missing the standard TRIAD mount.]]

The [[Diemaco]] [[Colt Canada C7 and C8|C7 and C8]] are a family of rifles developed concurrently with the M16A2.{{sfnp|QORC, ''Colt Canada''|2012}} They are the standard issued rifle for the [[Canadian Armed Forces]], manufactured by Diemaco (currently [[Colt Canada]]). The C7 is a branch developed from the experimental M16A1E1. Like earlier M16s, it can be fired in either semi-automatic or automatic mode, instead of the burst function selected for the M16A2. The C7 also features the structural strengthening, improved handguards, and longer stock developed for the M16A2. Diemaco changed the trapdoor in the buttstock to make it easier to access and a spacer of {{convert|0.5|in|mm}} is available to adjust stock length to user preference, along with the addition of hammer-forged barrels. Unlike the American M16A2s, the Diemaco C7s utilize A1 style rear sights.  The Canadians originally desired to use a heavy barrel profile instead.

The C7 has been developed to the C7A1, with a [[Weaver rail]] on the upper receiver for a C79 3.4×28 optical sight, and to the C7A2, with different furniture and internal improvements. The Diemaco produced Weaver rail on the original C7A1 variants does not meet the M1913 "Picatinny" standard, leading to some problems with mounting commercial sights. This is easily remedied with minor modification to the upper receiver or the sight itself. Since Diemaco's acquisition by Colt to form Colt Canada, all Canadian produced flattop upper receivers are machined to the M1913 standard.

The C8 is the carbine version of the C7.{{sfnp|''Automatic Carbines''| 2008}} The C7 and C8 are also used by ''[[Hærens Jegerkommando]]'', ''[[Marinejegerkommandoen]]'' and [[Forsvarets Spesialkommando|FSK]] (Norway), [[Danish Defence|Denmark's Armed Forces]] (all branches), and the [[Netherlands Armed Forces]] as its main infantry weapon. Following trials, variants became the weapon of choice of the British SAS.