The Tactical shotgun V2 has now been updated and also comes with instructions!
Step 1: Stock
Just follow the pics.
Step 2: Middle Part
Keep following,it's not difficult.
Step 3: Barrel/under Barrel Shotgun
Step 4: Mag/ammo
Step 5: Loading
1. Load ammo
2. Insert mag ak style(pics 1-2)
3. pull back pin
6. rinse,wash and repeat =)