

WOLFIEK GROUP
Alfa Precision · Polygonal Barrel · Blank · Cal .22 (5.5mm)
This barrel blank is manufactured for gunsmiths and precision airgun builders requiring consistent internal ballistics performance in .22 caliber. The polygonal rifling profile is machined to reduce pellet deformation and gas blow-by, contributing to improved velocity consistency and shot-to-shot accuracy.
Technical Benefits
- Polygonal rifling profile: minimizes friction between pellet and bore surface, reducing wear and improving seal consistency.
- 6 grooves (N=6): polygonal groove configuration optimized for reduced pellet deformation and consistent sealing.
- Available in 15mm or 16mm OD: compatible with a range of action and shroud configurations.
- Length/Twist combinations 650mm/450mm and 700mm/406mm: select the configuration that best matches your pellet weight and platform requirements.
- Unfinished blank: supplied without external profiling, threading, or crowning, allowing full customization to the builder's specifications.
Specifications
| Parameter | Detail |
|---|---|
| Caliber | .22 (5.5mm) |
| Outer Diameter (OD) | 15mm / 16mm |
| Length | 650mm / 700mm |
| Twist Rate | 450mm / 406mm |
| Number of Grooves (N) | 6 |
| Rifling Type | Polygonal |
| Choke | No |
| Weight | 1100g |
| SKU | 30-15 (15mm / 650mm / 450mm) 30-16 (16mm / 650mm / 450mm) 31-15 (15mm / 700mm / 406mm) 31-16 (16mm / 700mm / 406mm) |
Installation requires machining, fitting, and finishing by a qualified gunsmith. This is a raw precision component, not a finished, ready-to-install barrel assembly.
OD:15mm
Length/Twist:650mm/450mm
Choose options
OD:15mm
Length/Twist:650mm/450mm
OD:15mm
Length/Twist:650mm/450mm
