I have used both Dlask and Tac Sol... also, Kidd, ERS, RT, GM, WP etc... on many, many builds... between Dlask and Tac Sol, the Tac Sol wins on weight by a good margin, but the lask barrel is more accurate... and this has been confirmed by multiple comparisons... if you want a light weight barrel, go with a Dlask sporter or stepped barrel... and obviously the shorter barrels are lighter... The 12.5" Dlask will outshoot a 16.5" Tac Sol... at least in my experience.