Thread: Gun city quality firearms…. Yea na

Back when I did machining I would always machine it to the closest fit possible.
Wasn't any guages floating about as it was always generally one offs.
Repairs not production.
The end of a new hydraulic cylinder spear for a piston or vice versa.
If you are doing it all yourself all the time production wise it gets easier.
CNC lathes and taps to your spec as required.
Someone else's specs could be slightly different either smaller or bigger and on a small thread on a rifle barrel a couple of thou is heaps

As an apprentice I was never allowed to screw cut threads to suit a part, I always had to measure and make them to standard size. Great way to learn the "feel" of a correctly fitting thread, over the years we ended up with a huge cupboard of home made test gauges. When you're dealing with parts from an outside supplier it's a good idea having the component (suppressor) available because it is a great way of not only checking the fit but checking that the customer has given you the correct thread details for the suppressor, it has happened many times over the years that I've been given a part with different specs to the drawing.

Ive had a few bad experiences with GC in Auckland only, here’s the thing though all the bad dealings I’ve had were due to GC offshore made parts/component's, like most of us I have dealt with a lot of different stores and I feel when a mistake like this occurs it should be discussed and the store should be held accountable, clearly the manager of GC down here has owned this mistake which is admirable. We need to be aware of these things and keep the community informed so we can check this next time we get a new firearm, an accident like this could have seriously injured someone so educating and us all learning from it is important.

Yeah, the only way when you don't have the spec that the part was threaded to is to have the part when you are machining something up to match it. There is a SAAMI? spec for suppressor threads referenced to engineering spec for tolerance and finish - I recall Class 2A being bandied about?

The Class for whatever size thread gives the clearances to meet that spec, the interesting thing with it is you can run into 'mismatch' when parts come from different temperature areas and are made using different tooling which is not quite compatible. We had a good example of this with a fibreglass corrosion resistant nut and bolt assembly, the two materials were machined perfectly on land but in the wet environment where they were to be used they were an interference fit and you had a working time of less than a couple of minutes. The tooling making the nut was slightly different angles to the external tool on the threaded rod, which when both hit the colder temp in the water caused the two to interfere. If you were quick enough to assemble them, they were permanently fitted but if not it was a cut off and replace job!

1) Somebodys suppressor flew off because of a (silly) mistake made by a seller
2) said seller is known to make many silly mistakes, in this instance it led to a potentially dangerous situation
3) the seller apparrently rectified said mistake - this is not something that needs to be commended, but is his duty by law!
4) it is absolutely irrelevant if a suppressor is made, locally, overseas, or on mars. The seller has to confirm that the product they sell meets the quality, requirements and if they are unwilling to do that they should stop selling these products.
5) in this case it was not an out of spec thread but a completely wrong one which was not picked up.
6) personally, I deal with machined parts both locally produced as well as imported... the most grave mistakes always happen locally, and we are now only manufacturing domestically if the timing requires it. Reading a caliper or tape measure seems to be difficult for many NZers...
7) they fucked up, but atleast fixed their fuck up so at least that... it would be nice if they spent more time into overseeing their apprentices and teaching them how to do things properly... there is quite a bit of potential for improvement there.

Say what? What did the “apprentice” do wrong?

Originally Posted by Tahr

Say what? What did the “apprentice” do wrong?

Don't give it oxygen ...

Originally Posted by Shamus_

Don't give it oxygen ...

It has no oxygen. GC has explained what happened. A mistake was made across the counter.

exactly Shamus enough - the key points I took were 1) GC came on and said our ballsup and put it right good stuff ( hell how many transactions now a days one cant even get hold of the seller or are left sitting on the end of a phone trying to get some action ) no well done GC 2) he said the young fella will be gutted when he learns of the mistake - that implies that he cares about his job and role well done - we all are capable of mistakes -shooting goats one day could not understand why a round would not chamber duhhh .223 into a .222 - mate I was zeroing with must have dropped it into my icecream container of ammo

Did the ammo come from gc, maybe you could blame them

no all supplied from one major retailer in bulk no my mate must have dropped it in -we were both at a shooting mound together and I dont have a .223 he did

Ive even heard of the odd miss matched round i a factory packet of ammo

So after following this thread and seeing some interesting opinions I thought Id throw it out there. So who is ultimatley resposible for checking your gear? You they guy at the gun shop, someone else? And do check your purchases when tou get home or just take someone elses word for it that everythings all good? Me I check my own gear even if its brand new.

Originally Posted by STC

1) Somebodys suppressor flew off because of a (silly) mistake made by a seller
2) said seller is known to make many silly mistakes, in this instance it led to a potentially dangerous situation
3) the seller apparrently rectified said mistake - this is not something that needs to be commended, but is his duty by law!
4) it is absolutely irrelevant if a suppressor is made, locally, overseas, or on mars. The seller has to confirm that the product they sell meets the quality, requirements and if they are unwilling to do that they should stop selling these products.
5) in this case it was not an out of spec thread but a completely wrong one which was not picked up.
6) personally, I deal with machined parts both locally produced as well as imported... the most grave mistakes always happen locally, and we are now only manufacturing domestically if the timing requires it. Reading a caliper or tape measure seems to be difficult for many NZers...
7) they fucked up, but atleast fixed their fuck up so at least that... it would be nice if they spent more time into overseeing their apprentices and teaching them how to do things properly... there is quite a bit of potential for improvement there.

Implying "said seller" makes more mistakes than other "sellers" is creative writing which suits your cause.
They may well make more mistakes than the average Gunshop. But I would suggests that their mistakes as a percentage of transactions is likely as low as other retailers.
I don't have stats to prove it, but yet to see stats which disprove it also.
All this "perfectionist" talk of threads has been a eye opener for me. I could have quite likely had the same result as the OP and the apprentice.

Originally Posted by STC

1) Somebodys suppressor flew off because of a (silly) mistake made by a seller
2) said seller is known to make many silly mistakes, in this instance it led to a potentially dangerous situation
3) the seller apparrently rectified said mistake - this is not something that needs to be commended, but is his duty by law!
4) it is absolutely irrelevant if a suppressor is made, locally, overseas, or on mars. The seller has to confirm that the product they sell meets the quality, requirements and if they are unwilling to do that they should stop selling these products.
5) in this case it was not an out of spec thread but a completely wrong one which was not picked up.
6) personally, I deal with machined parts both locally produced as well as imported... the most grave mistakes always happen locally, and we are now only manufacturing domestically if the timing requires it. Reading a caliper or tape measure seems to be difficult for many NZers...
7) they fucked up, but atleast fixed their fuck up so at least that... it would be nice if they spent more time into overseeing their apprentices and teaching them how to do things properly... there is quite a bit of potential for improvement there.

There is silly then there is sillier still trying to make yourself feel superior by pointing it out.

Just for the record, outline your theory on how a suppressor "flying off" is dangerous? I've seen at least 3 go flying and never a problem . . .