Any of you accuracy guys have knowledge of Wilson blanks that are used for "Match" grade barrels on AR's?

Features:

Stainless Steel Match Grade Wilson Blank
Length: 18″ SPR
Twist: 1:8
Thread Pitch: 1/2 X 28
.750 Gas Block Seat
.223 Wylde Chamber
Rifle Gas System
M4 Feed Ramps
SPR Contour
Bead Blasted Finish
Weight: 2 lbs 9 oz


Sells for $250


Are they worth investing in or should something else be looked into?

Not shooting competitions, just want an accurate barrel for a build to shoot preds & varmints out to 300 yards or so.... with min walk while rapid firing.
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