The M4 can select semi-automatic fire or three-round bursts. The M4A1 can be switched from semi-auto to fully automatic.
A semi-automatic M4 derivative can cost as low as $800 from ImpactGuns. But for a civilian to acquire a fully automatic, military grade M4, be ready to spend up to $3000.
The M4 is a military rifle capable of semi automatic or 3 shot automatic fire. It is used where a lighter shorter rifle is useful.
The M4 is capable of automatic fire, the AR 15 is not
They are not the same. The M4A1 was first issued to U.S troops in 1997. It is more reliable than the M4 and has a fully automatic fire capability.
The M3 is the semi-automatic version of the Ar-15 (M4).
The M3 is the semi-automatic version of the Ar-15 (M4).
M4 is a nomenclature which was coined by the military. Is is a select fire weapon, with both semi-automatic and either burst of full auto firing modes. Civilian legal lookalikes which fire semi-auto only can be purchased, and some (such as Bushmaster's) are even marketed under the name "M4". However, most of these "M-forgeries" do not meet the specifications prescribed by the Department of Defence for the actual M4 carbine.
well it basiclly depends on if you want a automatic or just a spring m4. If you get an automatic they can break very eaisly unless you take care of it. My suggestion is to go to www.Hobbytron.com. one of the best sites plus their cheap and very hard to break.
The M249 Squad Automatic Weapon fires the same 5.56x45mm cartridge used by the M16 and M4.
The basic M4 carbine is limited to three round bursts, but the M4A1 does indeed have unrestricted full auto capacity, as do the Canadian variants of the M4 (Diemaco [now Colt Canada] C8), and the unlicenced Chinese copy of the M4 (Norinco CQ-556A).
The M4A1 is a variant of the M4 carbine, now capable of fully automatic fire. The M4 was in turn derived from the M16A2 assault rifle, which has rear sights adjustable for elevation and a brass deflector for left-handed users. The M4 and M16A2 share the same receiver and trigger group.
SOPMOD is a kit issued to customise m4's for special operations, and more recently regular infantry use. It contains an array of attachments including IR laser pointers, silencers, ACOGs and reflex sights. Special operations use the M4A1 variant which is virtually the same as the regular M4 but has the ability to fire fully automatic.