An extremely high front sight ramp/blade combination is going to be needed, in order to zero the rifle with a NECG or XS peep mounted atop a Weaver base.
Start by measuring the distance from the firing pin C/L at the rear of the bolt (just about under the peep) to the middle of the adjustment range of the mounted peep.
Secondly, measure the barrel diameter about 1 1/2" back from the muzzle, and divide that figure by two.
The total height of the front ramp above the top of the barrel, with a sight blade mounted, should equal the measurement at the rear, less 1/2 the barrel diameter at the front (as measured above).
You could order a tall ramp with a correspondingly short sight blade, or a shorter height ramp with a taller sight blade - your choice, but I would suggest a taller ramp/lower sight combo.
With a peep that high, however, you just might need both a tall ramp and a tall sight blade.
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