M1Sales service and turn-around question

[Pitt300]

My understanding from M1S is that they are using AAC's drawing for 5/8x24 as their standard thread pattern on 300-221 unless you ask for something else.
I sent AAC's drawings to them.

[Fudmottin]

It's very cool of AAC to have all their threading standards available on Silencer Talk. Good public service.

[mooster1223]

Originally Posted by Pitt300

My understanding from M1S is that they are using AAC's drawing for 5/8x24 as their standard thread pattern on 300-221 unless you ask for something else.
I sent AAC's drawings to them.

Their "standard" is 1/2 36 for the 300-221. If you request 5/8 24, they use AAC's guideline. My blackout flashhider went right on.

[TCCrewchief76]

M1S charges an extra $50 to thread 5/8-24 according to the lady I talked to there. I don't understand why they would standardize on 1/2-36; that's pretty thin on the end after the threading.

Kevin