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Colt Defense / Diemaco AR-15A3 Tactical Carbine AR6721 Pre-Colt Canada 5.56 NATO
Guns International #: 103695798 Seller's Inventory #:
Category: Colt Rifles - AR-15 - AR15 Rifles
Seller's Information
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Seller: TherealGunsBay
Member Since: 9/4/25
First Name: James
Last Name: Gannon
State: Idaho
Zip: 83705
Country: United States
Phone: (986) 213-4380
Number of Active Listings: 4
Total Number of Listings: 12
Seller: FFL Dealer
Return Policy: 3 day inspection and return policy on used guns.
Payment Types Accepted: Credit Card, ACH
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Description:
The Colt AR-15A3 Tactical Carbine (AR6721) is an exceptionally rare Colt Defense-imported Diemaco rifle produced during the pre–Colt Canada era, featuring genuine Diemaco-manufactured upper and lower receivers, Diemaco barrel assembly, bolt carrier group and buffer tube — essentially a true factory Diemaco gun imported through Colt Defense. Built with the desirable 16” HBAR barrel, forged receivers and flat-top upper configuration, the AR6721 developed a strong reputation for reliability, durability and practical accuracy in law-enforcement and professional use. Pre–Colt Canada Diemaco rifles are seldom encountered on the commercial market and carry significant collector interest due to their connection to early Canadian military-pattern AR production and limited U.S. import availability, making this an especially desirable example for serious Colt and military AR collectors. This rifle has seen very little actual use and remains exceptionally clean, adding further appeal for collectors looking for a hard-to-find Diemaco example in outstanding condition.
Price: $2,000.00
Rifle Caliber: 5.56x45mm NATO
Manufacturer: Colt Defense
Model: AR15-A3
Barrel Length: 16.1
Condition: Very Good
Metal Condition: Very Good
Bore Condition: Very Good
Barrel Type: Cold Hammer Forged
Action: Semi