This upper has it all for your Ruger MK IV. Not only is it extremely
lightweight and well-balanced, but the accuracy is even better. How do they do that? They use a Type III hard anodized machined aluminum receiver
to reduce the weight but then fit it with a stainless steel match
Their LLV Competition Uppers are unlike other lightweight designs.
Even though it is lightweight, it still features a stainless steel
breech to withstand the rigors of competitive shooting.