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Just wondering why gas piston rifles have standardised on a recoil spring in the receiver or butt? Placing the recoil spring under or around the barrel would be possible. Would the required spring size fatten the foregrip too much? It has been done before here...

You have to bear in mind that ALL guns are sold with consumer warnings. I waded through 10 pages of warnings before I fired up my new drill press. The drill press is dangerous no doubt but used according to instructions is fine. Same thing for a 10,000 round gun. Some people will baulk at a...

No it would be warranted for 10,000 rounds and be safe in that zone. That's 10,000 rounds of capability that won't be siezed in a black rifle ban or a semi auto ban because it can be reconfigurable to pump action. That's 10,000 rounds vs no gun and if you plan to buy 10 to cache as prepper do...

You could be right. Where I think the "AR competition" went wrong is that they tried to compete with a 40 year old developed design with a massive installed base. They even look like black rifles and can't be (at this point) easily converted to pump action in the event of a semi auto ban. Some...

Russian surplus runs russian ammo and this design is meant to be compatible with AR-15 mags and ammo. Not to compete with AR-15s in performance. If the price was low enough then it was envisaged as a cheap cache weapon, semi-auto, compatible with your main AR-15 mags and ammo and looking like a...

Interesting comments. In general, reliability costs money and it is often hard to predict how much reliability those extra dollars provide without exhaustive testing and even that would need to span environments/conditions to be really useful. In general, a single unit machined bolt should be...

Interesting comments. In general, reliability costs money and it is often hard to predict how much reliability those extra dollars provide without exhaustive testing and even that would need to span environments/conditions to be really useful. In general, a single unit machined bolt should be...

True to a large extent. However some things seem to be known or at least are known to be more difficult than others- even without prototyping- and would suggest they should not be tackled lightly. For example a blowback design using rifle cartridges is accepted to be silly because of the...

Good points. However I'm not looking to compete with an AR-15 on weight or even performance. Something heavy and in the ballpark of performance s fine given that this is (hopefully) an armageddon weapon, although undoubtedly someone could possibly still try yo hunt deer with it in 30 years time...

Thanks for everyone's comments. Very helpful and informative. I probably need to explain the second part which is the marketing strategy. As they say, if you have a better mousetrap then the world will beat a path to your door. Except "better" is in the eyes of the beholder. Better could...

That's hard to beat. I have a bit of a marketing strategy to counter it...maybe. I'll explain in a separate post.

Yes in general arms manufacturers want to be known for quality rather than cheap n nasty. And I have a fear that lawyers would swarm to a liability-fest. What's wrong with putting 20,000 rounds thru a 10,000 round action? What's wrong with putting a 10 ton truck on that 1 ton jack stand? I...

I wish I knew. I don't know if 3D metallurgy is strong enough for rifle barrels....

All good points. In a way, the tilting bolt design adds weight in the receiver that otherwise would be in the bolt. However the machining of the bolt can be simplified especially if compared to a rotating bolt and barrel recesses. I agree that a large production run of bolts in a CNC setup...

The problem with a prototype to estimate cost is that the price of one off components and labour (while u learn the design) doesn't generalise well to full manufacturing. I'm wondering if anyone knows in ball park terms what % of rifle cost tends to come from bolt machining alone? I would...

Thanks for that. Is the price you quoted for a built up Ar-15 (i.e. DIY)? I was hoping there would be more people unwilling to build up an AR themselves and more likely to buy something new off the shelf.

I'm looking for advice on a new design that I have lodged a provisional patent on. The action is quite unique. I have searched the patent literature extensively and haven't found anything similar. I won't provide great detail here- suffice to say it is something like a tilting bolt design...