+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
FREE SHIPPING & FREE RETURNS*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

I have an AR chambered in 7.62x39 but the barrel threads is 5/8x24. And it says that the .308 caliber thread is the 5/8x24. Can I use the .308 instead — 2 Answers

by Joshf, from VA, United States Asked on January 15, 2021

Name Phase 5 Weapon Systems Inc Fatman HexBrakes (4.8)
As Low As $114.00 Save Up to 31%
View Product
Write a Review
Continue As a Guest
Saving...
Sign In or Create an Account (optional)
or Register
Why use an OpticsPlanet.com account for my questions and answers?

Having an account with OpticsPlanet.com makes writing questions and answers even better! We’ll save all of your questions and answers in your account, provide you easy access to them, so you can see how the community has responded.

If you’d like to add a question without creating an account, you can proceed with filling out the fields on this form.

Show
Sort by
Filter by
Expert Answer
A
Answered by Julia, Gear Expert, from IL, United States, on February 05, 2021

No, because 7.62x39mm bullets are commonly up to .311 inches in diameter.

0 of 9 found the following answer helpful.
Was it helpful to you? Yes | No
Share
A
Answered by Andrew Montague, member, from KS, United States, on October 10, 2021

Nominal size difference between a bullet and the inside diameter of a muzzle break should be .020 or bigger. The bullet diameter of your 7.62x39 is .001 to .003 inches bigger than a .308 win, so more than likely it will be fine, but it's highly encourage you to find what the inside diameter is of the break before ordering.

Was it helpful to you? Yes | No
Share