Military Armament Corporation MAC 1014 Marine 12 Gauge Semi-Auto Shotgun, 18.5" Barrel, Satin Nickel, Ghost-Ring Sights, 5+1
The MAC 1014 Marine is a 12-gauge, self-regulating gas-piston semi-automatic patterned after the M4/M1014 layout, built around an 18.5" barrel and a corrosion-resistant satin nickel finish. It features a receiver-top Picatinny rail with adjustable ghost-ring sights and uses the Benelli/Mobil-pattern interchangeable choke system. This example includes Full, Modified, and Cylinder choke tubes, with the Cylinder choke installed.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Specific Condition Notes: There are some very minor scratches and blemishes visible on the exterior from light handling.
What’s Included
- MAC OEM fixed pistol-grip stock (black polymer) with rubber buttpad
- Choke tubes with small plastic storage case (Full, Modified, and Cylinder; Cylinder installed)
- Velcro-backed elastic shotgun shell cards
- Reflex red-dot sight with integrated laser, with storage case
- Simple web sling with plastic buckles
- Original factory cardboard box
- MAC 1014 owner's manual
The MAC 1014 Marine uses a self-regulating gas-piston operating system patterned after the M4/M1014, giving reliable cycling with both 2-3/4" and 3" 12-gauge loads. The 18.5" barrel is paired with a full-length tubular magazine for a stated 5+1 capacity.
A satin nickel, corrosion-resistant finish covers the receiver and barrel, tailored for marine or high-humidity environments. The barrel and magazine are secured by a clamp with an integrated sling plate, and the magazine features a knurled end cap for easy disassembly.
Sight alignment is fast and repeatable with the protected front post and adjustable ghost-ring rear. An integral receiver-top Picatinny rail provides a solid mounting surface for optics. An enlarged, cylindrical charging handle offers a positive grip for charging and clearing.
The shotgun wears durable polymer furniture, including a ribbed black polymer forend and a pistol-grip stock with a rubber recoil pad. On this model, length adjustment provides a cited length-of-pull range of 11"–15" for fit across varied shooting positions and gear.
This shotgun uses the Benelli/Mobil-pattern choke system and ships with Full, Modified, and Cylinder tubes (Cylinder installed). It is manufactured in Turkey, marked "Made in Turkey," and is compatible with many M4-pattern aftermarket parts.




