I purchased the gas block about a month ago for a SBR build. It is the newest version, gen. 4, Melonite, set screw model. I Decided to go with a pencil profile barrel so I need a .625 size gas block. Will trade for SLR Sentry 6 or sell with installed SLR black Nitrate coated carbine length gas tube. Condition is as new. Value of block and tube is $140 ($120 +$20). I will take $120 shipped. PayPal preferred (gift or +4%) or USPS MO.
Email is best way to reach me: DenverDave2014@gmail.com