Description
The Arsenal SAM5 5.56 is a milled-receiver AK built in Bulgaria from 100 percent new-production parts, chambered for 5.56×45 NATO rather than the usual 7.62×39. Milled receivers are heavier and more expensive to make than stamped ones, and Arsenal is one of very few makers still producing them to the original standard. This one wears black polymer furniture and a FIME Enhanced Fire Control Group.
Receiver and Barrel
Hot-die hammer forged Bulgarian receiver, bolt and bolt carrier, then milled from solid rather than stamped from sheet.
16.3-inch cold hammer-forged barrel from Arsenal’s Bulgarian factory, built on Steyr manufacturing technology, with a hard-chrome plated bore and chamber.
The Arsenal SAM5 5.56 carries 14x1mm left-hand muzzle threads with an AK-351 muzzle brake fitted.
Chrome lining and hammer forging together are what give this barrel its service life; Arsenal claims substantially extended life over comparable assemblies.
Furniture, Trigger and What Ships
FIME Enhanced Fire Control Group, widely considered the best drop-in AK trigger available.
Black polymer furniture with an intermediate-length US-made ten-trapdoor buttstock, total length of pull 13.4 inches.
AK scope rail fitted to the left side of the receiver, plus a bayonet lug and cleaning rod.
One 30-round magazine, a sling, an oil bottle and a cleaning kit are included.
Compliant with 922(r) using US or imported magazines.
Arsenal SAM5 5.56 Specifications
- Caliber: 5.56x45mm NATO
- Receiver: milled, hot-die hammer forged Bulgarian steel
- Barrel: 16.3 inch cold hammer forged, hard-chrome lined bore and chamber
- Muzzle: 14x1mm left-hand threads with AK-351 muzzle brake
- Trigger: FIME Enhanced Fire Control Group
- Furniture: black polymer, intermediate-length ten-trapdoor buttstock
- Length of pull: 13.4 inches
- Features: AK scope rail, bayonet lug, cleaning rod
- Included: one 30-round magazine, sling, oil bottle, cleaning kit
- Compliance: 922(r) compliant
- UPC: 810054132349
Milled versus stamped is the defining question in AK collecting. A stamped receiver is lighter, cheaper and entirely adequate, which is why most AKs ever built used one. A milled receiver is cut from a solid billet of forged steel, adding roughly a pound of weight and a great deal of machining time, and the result is a stiffer action with less flex and a reputation for accuracy the stamped guns do not quite match. Very few factories still make them, and Arsenal is the one most collectors name first.
Why it is worth considering
- Milled Bulgarian receiver, not a stamped commercial build.
- Cold hammer-forged chrome-lined barrel from the factory that made them for the Bulgarian military.
- FIME Enhanced Fire Control Group fitted rather than a standard AK trigger.
- 5.56 NATO chambering, so ammunition is inexpensive and widely available.
- Scope rail, sling, cleaning kit and magazine all included.
Who it suits
AK collectors and shooters who want the milled receiver without hunting a used example are the natural buyers, and the 5.56 chambering keeps feeding costs closer to an AR than a 7.62×39 rifle allows. This is a serious rifle at a serious price; if a stamped receiver in 7.62×39 suits the budget better, Arsenal builds those too.

Ammunition, Magazines and the Rest of the Range
A 5.56 AK takes AR-pattern ammunition but not AR magazines: the SAM5 uses its own AK-pattern 5.56 magazines, and one is supplied. 55-grain 5.56 ball is the standard practice load. Browse the rest of the Arsenal range, which includes the SAM7 series in 7.62×39, or the wider firearms catalog. Arsenal publishes model details at Arsenal, Inc.
The fitted scope rail is the standard AK side-mount pattern, which accepts the usual side-mount optic bases. Most shooters running a red dot on an AK use that rail rather than a receiver-cover mount, because the rail is attached to the receiver itself and holds zero through disassembly.
All firearm orders ship to a licensed FFL dealer for transfer, and MAG5 Firearms will coordinate the paperwork with the dealer of your choice. Note that 922(r) compliance depends on the parts fitted; replacing furniture or magazines with imported components can change the count, so check before modifying the rifle.







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