Rock river lar-8 20th bull barrel

emlupi said:

That scope is mounted too far rearward for you to get good head placement and eye relief while maintaining good contact between your shoulder and buttplate. You will be trying to “turtle” your neck back to center your eye in the correct position.
Here are a couple of pictures of scopes mounted for optimum head position from multiple firing positions. Notice how far out over the hand guard the scopes are positioned. I would turn the front ring 180 degrees and move the whole setup further forward. Leave the rings loose and get behind the rifle, then get a good head position and slide/move the scope and rings to get the best sight picture possible. Then you can torque down the fasteners. Just my $.02 View attachment 846659 View attachment 846660

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emlupi said:

Yes, larger case head diameter (.473” vs .378”) and higher SAAMI max chamber pressure (62,000 psi vs 55,000 psi) means more steel to keep it in check. Coupled with a longer stroke, that bolt carrier group will feel much different than an AR-15 while cycling, especially when it slams back into battery.

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FL Moore said:

You’re going to like that but you’re going to have to set it up right !!

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