Colt M16A1 for sale
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Colt M16A1 Retro Reissue 5.56 AR-15 Rifle - CRM16A1
Brand:
Colt
Action:
Semi-Auto
Barrel Length:
20"
Caliber:
5.56×45mm NATO
Capacity:
20+1
Rounds:
20
Frequently Asked Questions
Colt M16A1 for sale
Can you legally own an M16A1?
Yes, civilians can legally own an M16A1 if it was manufactured and registered before May 19, 1986, when the Hughes Amendment banned civilian ownership of newly manufactured machine guns. You must obtain ATF approval, pass a background check, and pay a $200 tax stamp. Prices can significantly exceed $25,000, with some listings reaching $54,995 or more.
What is the difference between the Colt M16A1 and A2?
A1 featured safe, semi, and full auto fire. A2 replaced full auto with three-round burst. A2 also has a heavier barrel, longer buttstock, improved rear sight with range adjustments, and a case deflector added to the upper receiver. Both fire 5.56 NATO.
What makes the M16A1 upper unique?
M16A1 uppers feature a fixed carry handle with A1-style rear sight, chrome-lined chamber and bore, forward assist, and an open-prong birdcage flash suppressor. These elements distinguish them from later variants and make them suitable for retro builds replicating the original 1960s military configuration.
When was the Colt M16A1 made?
Colt began manufacturing the M16A1 in January 1966, and it first entered service in 1967 as an improvement over the earlier M16 and XM16E1. The original M16 was produced from September 1962 through November 1965.
What are the disadvantages of the M16A1?
Early M16A1s suffered reliability problems in Vietnam due to incompatible powder in issued ammunition, causing fouling and jamming. The direct gas impingement system directs combustion gases into the receiver, increasing fouling. The rifle also requires more frequent cleaning than piston-operated alternatives and is sensitive to dirt and debris.
When was the M16A1 phased out?
U.S. Marines adopted the M16A2 in 1983, replacing the M16A1. The Army followed in 1986. Production of M16A1 variants ended in 1982, though existing rifles remained in service throughout the transition and beyond.
What are the markings on the Colt M16A1 barrel?
Colt M16A1 barrels typically bear "C MP B" markings. C denotes Colt, MP indicates magnetic particle inspection, P means proof fired, and B signifies a chrome-lined bore. A "12" near the muzzle indicates a 1-in-12-inch twist rate. These markings do not precisely date the barrel.
What's the difference between an M16 and an M16A1?
The M16A1 replaced the original M16's three-prong flash hider — which snagged vegetation and kicked up dirt — with a birdcage flash suppressor. It also added a forward assist and chrome-lined chamber and bore, addressing jamming problems from early Vietnam service. Both fire 5.56mm, but the M16A1 is the refined combat version.
What is the effective range of the Colt M16A1?
Military doctrine cited the M16A1's maximum effective range at 460 meters for point targets, though at least one official spec document lists 500 meters (550 yards). The standard combat zero was 250 meters, with the shorter range aperture marked "0-2" used for targets within 200 meters.
How much is a Colt M16A1 worth?
Civilian semi-auto M16A1 variants average around $1,277 new and $1,000 used, with a 12-month average near $1,242. Transferable full-auto military versions command $24,000–$40,000+, depending on registration and condition. Semi-auto models are legal nationwide; transferable versions require NFA registration and federal licensing.
Did the M16A1 jam a lot?
Early M16s jammed frequently in Vietnam due to a switch to ball powder, which increased fouling. The M16A1 addressed this with a chrome-lined chamber and bore, plus a forward assist. With proper cleaning, it ran reliably. Neglected rifles still jammed.
What caliber is the Colt M16A1?
The Colt M16A1 is chambered in 5.56×45mm NATO. It fires this round in semi-automatic or fully automatic modes via a three-position selector switch.