Tacfire HG20-13: TacFire is proud to announce its new Advanced Combat Engineering (ACE) Series Handguard. Constructed from the highest grade 6061-T6 aluminum and reinforced with a rugged class-2 Type III black hard anodize finish per MIL-A-8625 standards and specifications. These incredible M-Lok free-float handguards are leading the firearms industry with cutting edge precision, along with new era innovative designs.