ULTRADYNE Athena Linear Compensator

Athena .223 | 5.56 Technical Specs

• CALIBER 
  • Rated for the standard cartridges in the following calibers: 223 Rem, 5.56 x 45 NATO, 224 Valkyrie, 224 Weatherby Mag, 22-250 Rem, 222 Rem Mag, 222 Rem, 22 Nozler, 220 Swift, 22 PPC, 22 BR, 22 Hornet, 204 Ruger, 218 Bee
• BARREL THREAD  1/2-28 UNEF-2B
• BARREL THREAD LENGTH MINIMUM    .600″
• MATERIAL
  • 416 Stainless Steel
  • Salt Bath Nitride Finish
• MOUNTING Shrouded Timing Nut
• MASS
  • Brake Only 109 grams | 3.8 ounces
  • Total 133 grams | 4.7 ounces
• DIMENSIONS
  • Length 43mm | 1.69 inches
  • OD 24.8 mm | 0.975 inches
• WRENCH FLATS 7/8 inch
• TIMING NUT WRENCH FLATS 13/16 inch

Athena .308 | 7.62 Technical Specs

• CALIBER
  • Rated for the standard cartridges in the following calibers: 308 Win, 7.62×51 NATO, 300 AAC Black Out, 300 Savage, 303 Savage, 30-30 Win
• BARREL THREAD 5/8-24 UNEF-2B
• BARREL THREAD LENGTH MINIMUM    .600″
• MATERIAL
  • 416 Stainless Steel
  • Salt Bath Nitride Finish
• MOUNTING Shrouded Timing Nut
• MASS
  • Brake Only 130 grams | 4.6 ounces
  • Total 158 grams | 5.56 ounces
• DIMENSIONS
  • Length 43mm | 1.70 inches
  • OD 27.9 mm | 1.10 inches
• WRENCH FLATS 1 inch
• TIMING NUT WRENCH FLATS 15/16 inch

Athena 350 Legend Technical Specs *1/2-28 UNEF-2b*

• CALIBER
  • Rated for the 350 Legend
• BARREL THREAD 1/2-28 UNEF-2B AND 5/8-24 UNEF-2B
• BARREL THREAD LENGTH MINIMUM    .600″
• MATERIAL
  • 416 Stainless Steel
  • Salt Bath Nitride Finish
• MOUNTING *Crush Washer*
• MASS
  • Brake Only 114 grams | 4.0 ounces
  • Total 122 grams | 4.1 ounces
• DIMENSIONS
  • Length 51mm | 2 inches
  • OD 27.9 mm | 1.10 inches
• WRENCH FLATS 1 inch
• *** CRUSH WASHER DIAMETER*** 
  • 1/2 -28 Variation: 1/2 inch
  • 5/8 -24 Variation: 5/8 inch

• Installation Instructions For Crush Washer:

  1. Inspect and clean threads on barrel and muzzle device.
  2. Place the crush washer cone forward over the muzzle threads, then thread the muzzle device up against the crush washer.
  3. Hand tighten the muzzle device and note that crush must be flush with barrel shoulder and fully depress the detent.
  4. Using a wrench, turn the muzzle device 1/4 turn, then continue to tighten to index properly. If the muzzle device is tightened past desired position, start over with a new crush washer.
  5. Check concentricity with a bore alignment rod.
  6. Test fire at 25 yards into a paper target backed up by a minimum 15′ x 15′ safety berm capable of safely stopping projectiles. Verify the ability to shoot groups and inspect for baffle strikes for all loads that will be used.