Proof Research Stainless Steel Blank | .224 | 28" | 1:7 | Competition

Proof Research Stainless Steel Blank | .224 | 28" | 1:7 | Competition

SKU:
SS-224-28-7T-COMP
MPN:
114384
$400.00
$409.00
(You save $9.00 )
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Width:
4.00 (in)
Height:
36.00 (in)
Depth:
4.00 (in)
Current Stock:
3
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Description

Proof Research Stainless Steel Blank

Caliber: .224

Length: 28

Twist: 1:7

Contour: Competition

Proof make theirr steel barrels in-house with the exact same commitment to quality and repeatability as employ on the carbon fiber barrels. The drilling, rifling, and lapping process is identical to the composite barrels.  They start with the same steel as used in the carbon fiber barrels.  It is a double stress-relieved 416R stainless steel, a pre-hardened chromium stainless steel that was specifically designed by engineers in collaboration with rifle barrel makers to provide the consistent, high quality and durability the firearms industry demands.

Excellent machinability for gun drilling and reaming, plus exceptional polishability for uniform lapping


A homogeneous microstructure which responds to heat treatment providing a uniform hardness along the length of the barrel


An optimum combination of high tensile strength along with requisite toughness to withstand extreme chamber pressures encountered during firing


Excellent erosion wear characteristics and corrosion resistance

 

Additional Information
Barrel Contour:
Competition
Barrel Length:
28in
Barrel Twist:
1:7"
Manufacturer:
PROOF Research
Material:
Steel
Caliber:
.224 (5.56mm)
Shank Diameter:
1.25