My initial impression on handling this weapon was, it's heavy, the bolt sticks on lock up, bluing salts leached out around the rear trunion rivets & center support, but the blued finish & metal surface work is outstanding. Not quite a PolyTech's high luster, but noticeably better than your average Norinco.
What little internet buzz there is, mainly focuses on the mags being Saiga pattern & the choke threading accepts Remington chokes. Also, a few youtube videos depicting the unreliability of the JTS-12.
In reality, the magwell or more correctly, mag chute, is a blend of Vepr & Saiga. Only you shove it in(Vepr) then rock backwards to lock(Saiga/AK).
The top cover is hinged, like a Krink or M92 & has a rail that resembles 1913 Picatinny, but has a few spaces more like a Weaver rail. The topcover has some side play, so, red dots only, unless you want to tweak the cover by bending to skirt in, the eliminate the play. It's not rock solid, though.
I have referred to it as a Norinco, becuse of the makers/importer's markings: Jianshe. That is generally accepted to be State Factory /66\. Markings below.
The operator's manual states that "Cartridges used: 12 gauge ball cartridges 2-3/4" & 3" ". "Firing mode: Single shots".
Prior to firing, I field stripped the weapon, inspected & found a metal chip in the gas block & removed it. Then greased all contacting parts with 20% moly chassis grease. This did not take care of the 'going into battery' problem, so I hand cycled the bolt carrier 100 times. This improved it, but did not eliminate it. Another 100 cycles, maybe a little more improvement.
Test firing using 5rds S&B 00 buck with the gas valve on 3, no failures & with vigorous ejection to a distance of 8'-10'. Recoil is very acceptable.
Second firing of 5rds S&B 00 with the valve on 2, 1 failure to feed(hung up on something at the chamber), ejection about 5' away. Recoil was pretty light.
3rd firing on setting 1 caused FTE every round. Recoil unnoticed because of FTE.
A second shooter fired 5rds on setting 2, no issues.
A third shooter on setting 2 had FTEs on 3rds. Once I got him to lean into it & snug the gun tightly to his shoulder, no more issues.
Just like a Saiga, you can't baby these thing or hip shoot until well broken in.
It came with 2 5rd mags, choke tube tool(I won't call it a wrench), chamber plug, paperwork. Nice fitted box too, for a chinese gun.
Any questions?