:o I recently purchased the PRI version for my lightweight build. I would have picked the VLTOR "VST-1C", but it didn't come in a .625 I'm putting the PRI .625 flip-sight/gas-block on a Daniel Defense Mid Length 14.5" LW CHF barrel. Just ordered both from MidwayUSA PS. If anyone is making a MidwayUSA.com order anytime soon, let me know if you need my promo codes. I won't be using them in time. They expire 2/19/2012. I still have the codes for $10 off $100 orders, $20 off $200 orders, $30 off $300 orders, $50 off $500 orders.