Home / A-TEC TMM4 A-TEC TMM4 The TMM-4 is the largest standard sound moderator in the A-Tec product range. Supplied with 4 baffle modules. Each module weighs 43 grams. Its total length is 240 mm and its diameter is 49.5 mm. This is an aluminium alloy sound moderator suitable for hunters and stalkers who require an efficient, lightweight moderator $499.00 $799.00 Caliber 6.5 Muzzle Thread M18x1 6.5 / M18x1 Add to cart Share this