AI AW .308 barrel threading: M18x1.5 or 5/8"x24?

Stubb

Sergeant
Full Member
Minuteman
Oct 19, 2009
175
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52
Atlanta, GA
I'm about to order an AI AW in .308 from Mile High Shooting and will have them cut a 24" barrel model to 22" and thread it. The rifle will be getting an AAC Cyclone as soon as my bank account recovers. I'm not planning to run a muzzle brake. Any reasons to go with one thread pitch or the other? My NFA dealer stocks the Cyclone in 5/8"x24 but said they can get one in M18x1.5 without a problem.

This will be my only .308 for the foreseeable future. I have an SPR/M4 for my AR-15s.

—Andreas
 
Re: AI AW .308 barrel threading: M18x1.5 or 5/8"x24?

For the barrel threading the simple way is normally the best way. We offer 5/8x24 (which is the most common for .30cals), M18x1.0, M18x1.5 or 3/4x24 muzzle threading. I would recommend for this barrel, either the 3/4x24 or 5/8x24. Now if you plan on running the suppressor on other weapons, the TOMB or QD suppressor would better serve you so you can install muzzle brakes on several different host, and the suppressor will simply install on the brake directly. However, your choice and feel free to call us at the office tomorrow for direct customer assistance.
 
Re: AI AW .308 barrel threading: M18x1.5 or 5/8"x24?

Stacey—Thanks for your patient explanation of all the different threading options and muzzle devices for mounting an SAS Arbiter. The thread-over-muzzle-break option with you guys proof testing the rifle/suppressor combo sounded like the right one for me, as opposed to my initial thinking of screwing on an AAC Cyclone and hoping for the best. To say that I've been impressed with the pre-sales support I've received form you and Melissa across a couple of phone calls would be an understatement.

—Andreas
 
Re: AI AW .308 barrel threading: M18x1.5 or 5/8"x24?

You are very welcome and it was our pleasure to assist. We always prefer the customers to ask the questions up front so you are the "informed" customer. The only dumb questions are the ones the customer does not ask. When a customer call our team will always provide the honest answer and if they do not know or understand the question/answer, we will get someone who can or get you the honest informed answer. To all have a great weekend and safe shooting.