Griffin armament pistol booster length

astocks2622

New Member
Joined
Oct 3, 2024
Messages
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Location
Alaska
I'm planning on (legally) building a form 1 suppressor that I can switch between my rights and a 9mm pistol. I'm hoping to buy the Griffin Armament booster assy, but can't start buying parts and materials until I submit and am approved. However, I need to know the length of the booster inside the suppressor so I know how long to make the suppressor tube. Griffin declined to share with me any dimensions. Anyone have a griffin 1.375x24 booster assy they would be willing to measure for me? I'd need the length from threads to front of booster, thread tenon length, and diameter of the front of the booster.
 
Follow up question,
I want to go to with 1.375x24 (Hub) threads. I'm finding conflicting info on the major and minor diameters. One source is showing 1.370 major and 1.335 minor, theoretical machinist is showing 1.372 major, but 1.319 minor. The major diameters are close enough, but the minors are .016 different...
Any input on which is accurate?
 

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