This is a Walther Barrel chambered in 9MM, model 281329710.
This PPQ M2 4.6" threaded barrel works with 4" 9mm PPQ M1 and M2 pistols. The barrel has polygonal rifling for improved performance. The kit includes the barrel with 1/2" x 28 TPI threads " spring" and thread protector.
Features:
1/2X28 thread pitch
Includes barrel, spring and thread protector
