Ruger AC556 assault rifle with 30-round magazine. Note the fire mod selector at
the rear of receiver, above the trigger
Ruger AC556F assault rifle, with short barrel, 20-round magazine and stock
opened
Ruger AC556F assault rifle, with stock folded
Ruger Mini-14/GB "paramilitary" rifle, less magazine
Ruger Mini-14/GB-F "paramilitary" rifle with folding stock, full-length
barrel and 30-round magazine. Note lack of fire selector on receiver
Ruger Mini-14 rifle, original version (1980's production) with aftermarket
magazine
Ruger Mini-14 "Ranch" rifle of pre-2005 production. Note receiver with
integral scope mounts and folding rear sight
Ruger Mini-14 rifle, current version (as made since 2005). Note different front
and rear sights and polymer handguard which covers most of the operating rod;
Ruger Mini-30 "Ranch" rifle of current manufacture, with polymer stock
Caliber: 5.56x45mm NATO (.223 Remington); also 7,62x39 M43 in Mini-30 Action: Gas operated, rotating bolt Overall length: 943 mm (851 / 603 mm for AC-556F) Barrel length: 470 mm (330mm for AC-556F) Weight: 2,9 kg empty Magazine capacity: 5, 10, 20 or 30 rounds detachable box magazines Rate of fire: 750 rounds per minute (for AC-556 only)
Bill Ruger, one of leading US arms designers of post-WW2 period, began
development of a new semi-automatic rifle circa 1970. The rifle was intended for
either civilian and para-military use; it was patterned after current US issue
military rifle, the M14, and was chambered for
relatively new 5,56x45mm (.223 Remington) ammunition. Since its commercial
introduction in 1973 the Ruger Mini-14 rifle found wide acceptance among both
civilian shooters and a variety of police and security forces around the world.
For government users, Ruger produced two specialized versions of the basic rifle
- the Mini-14GB and AC-556. The former is still a semi-automatic only weapon,
but is fitted with protected front sight, flash-hider and a bayonet lug. The
latter is a selective-fired weapon, and thus can be classified as a true assault
rifle. All weapons in the Mini-14 family share same basic design, although there
are differences in certain parts; for example, AC-556 rifles had slightly longer
receiver, which hosts the fire mode switch at its rear part.
The first major modification to the Mini-14 family appeared in 1978, when Ruger
introduced an all-stainless version of the basic rifle. Until now, all Ruger
Mini-14 rifles are available either in carbon or stainless steel versions. In
around 1982 Ruger introduced its next civilian modification of the Mini-14,
known as the "Ranch" rifle. This version was optimized for use with
telescope sight, and thus was produced with integral scope bases on receiver.
Ejection mechanism was changed to eject spent cases to the right side, clear of
the scope, and rear sight was fitted on the folding base. In 1986, Ruger
introduced a Mini-30 rifle, which was same basic weapon but adapted to 7,62x39
M43 ammunition of Russian origin. The last change in the Mini-14 line-up
appeared as late as in 2005, when Ruger company introduced a new version of the
Mini-14, which incorporated integral scope bases of the earlier
"Ranch" rifles with protected front sight and non-folding diopter rear
sight, which has smaller mount that of previous rifles.
In general, Mini-14 rifles are known for their good reliability and durability.
Accuracy is usually quoted as somewhat inferior to AR-15
(M16)-type weapons, which are very popular in USA; however, Mini-14 rifles
are accurate enough for most purposes, and are excellent weapons for hunting,
home defense, and general plinking.
Ruger Mini-14 is gas operated, semi-automatic only weapon which uses Garand-type
rotary bolt with two lugs. Action is operated by the long-stroke gas piston,
which is located below the barrel and is concealed within forend of the stock.
The gas piston has cup-shaped head, and is linked to the bolt via Garand-type
operating rod which runs at the right side of the weapon. Manual safety also patterned
after M1 Garand or M14
rifle, and is located at the front of the triggerguard. The selective-fire
AC-556 hosts fire mode selection mechanism at the rear of the somewhat lengthened
receiver. Fire mode selector is a separate switch on the right side of receiver,
behind the ejection port. It has three positions - for single shots, 3-round
bursts and full automatic fire.
Standard stock of the Mini-14 is of single-piece type, with semi-pistol grip and
separate heatshiled above the barrel. Early Mini-14 rifles had wooden heatshiled
which exposed operating rod; military-type Mini-14GB and AC-556 rifles, as well
as current production civilian guns, feature polymer heatshields which over most
of the operating rod. Over the time, Ruger also produced a folding-stock
versions with wooden stock, plastic pistol grip and side-folding metallic
shoulder stock. Ruger also makes "all-weather" polymer stocks for
Mini-14 and Mini-30 rifles. It also must be noted that there are many
aftermarket stocks for Mini-14 rifles.
Standard sights consist of a blade-type front and adjustable diopter-type rear
sight; "Ranch" type rifles also had integral scope mounts on the
receiver, which will accept proprietary Ruger scope rings.
Original magazine capacities for Mini-14 rifles were 10 or 20 rounds, but since
infamous American "Assault weapons ban" of 1994 Ruger offered civilian
Mini-14 rifles with magazines containing only 5 rounds; however, some magazine
makers produced aftermarket magazines for Mini-14 and Mini-30 in capacities of
up to 40 (box) and 90 (snail-drum) rounds.