Ruger offered a selective fire variant of the Mini-14, the AC-556, to police and military customers. AC-556 models have a slightly longer receiver (shared with early production "series 180" models) to allow for full automatic operation. These models are available with features such as short barrels and bayonet lugs. The Mini-14GB model is a semi-automatic variant for police and military sale with the additional factory options of a short barrel, folding paratrooper stock, flash suppressor and a bayonet lug.
The AC-556 is a selective-fire version of the Mini-14 marketed for military and law enforcement use. The design incorporates a selector on the right/rear of the receiver to select either semi-automatic, 3-round burst, or full-automatic fire modes; the manual safety at the front of the trigger guard operates the same as a standard Mini-14. The front sight is winged and incorporates a bayonet lug. The 13-inch (330 mm) or 18-inch (460 mm) barrel incorporates a flash suppressor. A folding stock was used on the AC-556F and AC-556K. The rifle came equipped with 20-round magazines and a 30-round version was available for a time. The AC-556 is currently not in production.
The AC-556 is a selective-fire version of the Mini-14 marketed for military and law enforcement use. The design incorporates a selector on the right/rear of the receiver to select either semi-automatic, 3-round burst, or full-automatic fire modes; the manual safety at the front of the trigger guard operates the same as a standard Mini-14. The front sight is winged and incorporates a bayonet lug. The 13-inch (330 mm) or 18-inch (460 mm) barrel incorporates a flash suppressor. A folding stock was used on the AC-556F and AC-556K. The rifle came equipped with 20-round magazines and a 30-round version was available for a time. The AC-556 is currently not in production.
| Ruger Mini-14 | |
|---|---|
| Type |
|
| Place of origin |  United States |
| Service history | |
| Used by | Australia, Brazil, Honduras, United Kingdom, United States |
| Production history | |
| Designer | L. James Sullivan, William B. Ruger |
| Designed | 1967–1973 |
| Manufacturer | Sturm, Ruger & Company, Inc. |
| Produced | 1973–present |
| Variants | Ranch Rifle Mini Thirty Mini-6.8 AC-556 GB Target Tactical |
| Specifications | |
| Weight | 6 lb 6oz (2.90 kg) |
| Length | 37.25 in (946 mm) |
| Barrel length | 22.00 in (559 mm) (Target Rifle), 18.50 in (470 mm) (Ranch Rifle, Mini-30) 16.12 in (409 mm) (Tactical, Mini-30) 13 in (330 mm) (AC-556) |
| | |
| Cartridge | .223 Remington/5.56x45mm (Mini-14/AC-556) 7.62×39mm (Mini-30) 6.8 mm Remington SPC .222 Remington |
| Action | Gas-operated, rotating bolt |
| Rate of fire | Semi-automatic (Mini-14) 750rpm Selective fire (AC-556) |
| Muzzle velocity | 3100 ft/s (945 m/s) |
| Feed system | 5, 10, 20, or 30 round factory box magazine. Numerous aftermarket magazines and drums. |
| Sights | Iron |
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