Jianshe Arsenal M12AK-T1 12 Gauge Semi-Auto Shotgun, 18.7 in Chrome-Lined Barrel, M-LOK Handguard, AK-Style Sights, 10+1
The Jianshe Arsenal M12AK-T1 is a magazine-fed, AK-pattern 12 gauge semi-automatic shotgun built with a stamped-steel receiver and a 4-position adjustable gas system. It features an 18.7 inch chrome-lined, Rem-Choke compatible barrel, an aluminum M-LOK handguard with a continuous top Picatinny rail, and AK-style iron sights. This example includes three magazines and is marked by JTS, Katy, TX as the importer for Chongqing Jianshe Industry (Group) Co., Ltd., China.
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.
Bore Rifling: Not applicable - smoothbore shotgun barrel.
Specific Condition Notes: Minimal markings from previous handling and use. The bore presents bright and clean.
What's Included
- Jianshe Arsenal M12AK-T1 12 gauge semi-automatic shotgun
- Two 5-round polymer detachable box magazines
- One 10-round polymer detachable box magazine
The M12AK-T1 uses a gas-operated action with a 4-position adjustable regulator at the gas block, allowing the user to tune the system. It feeds from detachable box magazines and is built on an AK-pattern stamped-steel receiver with a ribbed top cover.
The 18.7 inch steel barrel is chrome-lined and Rem-Choke compatible, and the chamber accepts both 2-3/4 inch and 3 inch shells. Capacity is 10+1 with the included 10-round magazine. Overall length is 39.29 inches.
Controls follow the AK layout, including a right-side charging handle, a paddle-style magazine release, and a right-side safety/selector lever. The fixed black synthetic stock provides a 14.0 inch length of pull and includes a rear sling loop, paired with a polymer pistol grip.
The aluminum M-LOK handguard integrates a continuous top Picatinny rail. Sighting is via AK-style iron sights: a protected front post integrated with the gas block and an adjustable AK-style tangent rear sight.
Receiver markings include the JTS logo and importer information, with manufacture by Chongqing Jianshe Industry (Group) Co., Ltd., China. The barrel is marked "M12AK-T1 12GA 2-3/4 - 3".




