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Gas Block pros & cons
I searched for this information and didn't find a specific discussion, but please, if this is redundant, then my apologies.
I have an opportunity to buy an RRA 16" that has a gas block with an upper rail instead of the standard gas block/front sight. My first instinct was that I would prefer the standard gas block for simplicity and cost. I plan on setting this rifle up like my issue M4, with BUIS and an ACOG TA31F.
If I buy this rifle, I will need to also buy a front sight, and a sling point. I don't like the idea of extra parts that have the potential for loosening up and affecting accuracy, (also $$$), but I also understand the advantage of a low profile gas block that might allow a different optic setup in the future if I should ever choose to do so.
I have to decide whether to take the rifle today, and if I don't, then wait who knows how long until another one comes in that does have what I want.
Is there some other factor that I am missing, some other advantages to the low profile gas block, or am I concerned over a minor point?
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