Description
Ultradyne built the Apollo LR for the long-range crowd that lives behind a spotting scope, and it shows in how flat this thing shoots. Machined from 416 stainless steel with a salt bath nitride coating, it strategically vents gas away from your line of sight so you stay in the glass through the shot. If you've ever lost a splash because the muzzle jumped, this is the fix. Folks running heavier 6.5 loads regularly report felt recoil cut roughly in half, with one setup comparing a 195gr ELD to something closer to a .243 after the swap.
What the Apollo LR Does Behind the Trigger
The whole point here is spotting your own hits and misses. By diverting propellant gases up and out of your sight picture, the Apollo LR keeps you locked on target through recovery, which matters a ton in PRS-style shooting and any time you're calling wind and dialing corrections solo. It's rated for a wide spread of 6.5 and 6mm cartridges beyond just Creedmoor, including 6.5 PRC, 6.5 Grendel, .260 Rem, 6.5×47 Lapua, 6mm BR, and 26 Nosler, so it fits a lot of precision rigs.
Fit and Install on Your Apollo LR
Threading is standard 5/8-24 UNEF-2B, and the unit ships with a shrouded timing nut, so you get repeatable, indexed timing without messing with crush washers. It's compact at about 3.5 inches long and 1.04 inches in diameter, weighing right around 7 ounces total. Ultradyne calls for a minimum 16-inch barrel and at least .600 inches of thread length. The included nut is the standard .875 inch size, which covers most barrels. If you're running a heavy or bull barrel, you'll want to request the larger 1.0 inch nut instead.
Bottom line, this is a serious tool for anyone building a dedicated long-range 6.5 and wanting to stay on glass shot after shot.
Key Specifications
- Manufacturer: Ultradyne USA
- Model: Apollo LR
- Manufacturer Part Number: UD11180
- UPC: 850011462157
- Caliber: 6.5mm Creedmoor (rated for a range of 6.5 and 6mm cartridges)
- Product Type: Compensator
- Thread Pattern: 5/8-24 UNEF-2B
- Minimum Thread Length: .600 inches
- Minimum Barrel Length: 16 inches
- Material: 416 Stainless Steel
- Finish: Salt Bath Nitride
- Mounting: Shrouded Timing Nut (.875 inch standard)
- Length: 3.5 inches (89mm)
- Outside Diameter: 1.04 inches (26mm)
- Weight (Total): 6.98 ounces (198 grams)
- Wrench Flats: 15/16 inch
What’s Included
- Ultradyne Apollo LR Compensator (6.5mm Creedmoor, 5/8-24)
- Shrouded timing nut (.875 inch standard)
Frequently Asked Questions
What calibers is the Apollo LR 6.5 rated for besides 6.5 Creedmoor?
This model is rated for a broad list of 6.5 and 6mm cartridges, including 6.5 PRC, 6.5 Grendel, .264 Win Mag, .260 Rem, 6.5×284 Norma, 26 Nosler, 6.5×47 Lapua, 6mm BR, 6mm PPC, 25-06 Rem, .257 Roberts, .257 Wby Mag, and 243 WSSM. It's a flexible pick if you run more than one precision rig. Just confirm your barrel has 5/8-24 threads and enough thread length.
Does the Apollo LR come with everything I need to time it?
Yes. It ships with a shrouded timing nut, so you can index it correctly without crush washers or peel shims. The included nut is the standard .875 inch size, which fits most barrels.
Will the standard timing nut work on a heavy barrel?
The standard .875 inch nut covers most barrel profiles, but heavy or bull barrels may need the larger 1.0 inch nut. Measure your barrel shoulder to be sure, and request the 1.0 inch nut if yours runs larger than .875 inches. This keeps the shroud seated properly.
What barrel length does the Apollo LR need to run right?
Ultradyne calls for a minimum barrel length of 16 inches and at least .600 inches of 5/8-24 thread. Meeting those numbers lets the compensator do its job venting gas and controlling muzzle rise. Running it on a shorter barrel isn't recommended.






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