Set of two Marksman Barrel Backs (inside diameter .683 and .686). Set is optimal add to Marksman Barrel giving you ideal range of bore sizes for paintballs which are used today.
Features:
- A5/Milsig rear thread.
- A5/Milsig inside front thread.
- Install it among your barrel and marker and extend your stock barrel for 9cm.
- Complete length 12cm.
- Bore size .683 and .686.
Outer diameter of this barrel is 1" - DOES NOT FIT M5 MAGNUS