Some aficionados claim that no other mil-type rifle in any caliber has ever equaled the.308 M14, commonly known as the M21 because of the designation it acquired about 1972. Others maintain that the M21 is an improvement, pointing to its more comfortable walnut stock and capability to accommodate a larger scope in a thumb-screw-attached side mount.
This particular M21 was built by Fulton Armory to the specifications of its owner, Clint McKee. It uses a standard M14 receiver and is fitted with a Krieger stainless barrel that is air-gauged with a four-groove rifling with a right-hand twist at a rate of 1:11".
The standard M14 has an adjustable sighting system, but the M21 has a National Match rear aperture that has a peephole diameter of 0.0595" and a hooded eyepiece to facilitate 1/2 moa changes. Both sights are adjustable for windage zero by sliding the assembly in its dovetail after loosing the 7/64 Allen-head set screw. The elevation knob is adjustable from zero to 72 audible clicks (each representing 1 moa) to the right or left of center index line by rotating it.
As with most M1As and M14-type rifles, the rifle is fed from a detachable box magazine. An operating rod mounted on the gas cylinder extends from the bottom of the gun, but on this rifle it also features a spindle valve at its base. This has a slotted head that can be rotated with a combination tool, shutting off gas flow to the piston for use in firing rifle grenades, but this feature is not used by law enforcement marksmen.
One of the many reasons for an M14/M21's reliability is its oversized recoil buffer, which absorbs much of the energy that would otherwise be transmitted to the shooter. The buffer's weight is offset by a lightweight recoil spring, and the result is a smooth, precise action. Trying a lot of visit Springfield with Red, White and Blue American Flag Stock
While the M14's overall design hasn't changed since its adoption in 1957, Springfield has remained an innovative manufacturer and continues to offer a variety of custom upgrades. A popular option is the "Long Range Match" model that has an oversized customized glass-bedded walnut stock, an improved recoil buffer and a match trigger.
Another variation is the M25, a rifle built in honor of Marine Corps sniper Carlos Hathcock, known as White Feather to his enemies during the Vietnam War. The M25 has a synthetic stock and a barrel-mounted flash suppressor, but it otherwise is quite similar to the M21, as illustrated here. Both the M25 and the M21 are available from the Springfield Armory online store for $3,975, with one 10-round magazine, plastic storage case and instructions. A McMillan stock, like the one on the Fulton rifle, costs about $600 extra.
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