"The majority of my business will change from servicing firearms which are [now] prohibited to selling those which are legal, so I don't see any adverse effects in the long term.
"Potentially, if firearms are allowed to be modified [to meet new legal requirements], it would be a substantial increase in business."
Status Guns owner Nelson Collie, who manufactures and modifies firearms in Invercargill, said the most pressing issue was that nobody knew what was going to happen.
"Daily, I get many queries and I assume all gun shops are. People are asking 'what am I going to do, what do I have to do?' and I have to say to them, 'I know as much as you do'. There's no finite, bottom line to anything.
"There's a lot of hearsay but I haven't seen it in writing on a government letterhead yet and until it is there, nothing is really set in concrete."
H&J Smith Outdoor World Gun City owner John Green said he had also received some queries but could not answer them, given the details of the gun buyback scheme were yet to be confirmed.
He said 99 per cent of the company's customers would be unaffected.
"I think the new regulations may frustrate some people using those guns [military style semi-automatic], sort of as amateurs, but I would suggest the people working in that area [of pest control] professionally will arrive at a suitable solution."
Federated Farmers rural security spokesman Miles Anderson said many farmers would be concerned their firearms could be rendered illegal.
"We're waiting on proper identification of the firearms that are banned. What is permissible and what isn't - that's going to take a lot of good communication."
