This photo shows one of the studied species, a thin-pincered scorpion, Androctonus bicolor. When attacked by a predator, a scorpion can choose to use either its pincers or its venomous stinger to defend itself.
The authors here tested this hypothesis by comparing behavioral responses, performance measurements of pincers and stingers, and scorpion physical characteristics in individual scorpions.
This photo shows one of the studies species, a thicker-pincered scorpion, Iurus dufoureius. The researchers conclude that in situations when survival calls for maximum performance, scorpion behavior is correlated with performance. Transcriptomic tests have uncovered the protein composition of venom from the Scorpiops jendeki scorpion. Fables have long cast scorpions as bad-natured killers of hapless turtles that naively agree to ferry them across rivers. A new species of scorpion, Vaejovis brysoni, was found in the Santa Catalina Mountains in southern Arizona. A new species of scorpion Tityus (Atreus) crassicauda has been discovered from the extraordinarily biodiversity rich region of the Ecuadorian Andes.
The painful, potentially deadly stings of bark scorpions are nothing more than a slight nuisance to grasshopper mice, which voraciously kill and consume their prey with ease.
Scientists discover and describe a new species of scorpion, Euscorpius lycius, coming from the area of ancient Lycia, nowadays the regions of the MuAYla and Antalya Provinces in Southwestern Turkey.
Nematode worms may not be from Mars or Venus, but they do have sex-specific circuits in their brains that cause the males and females to act differently. Australian scientists may have found a way to stop deadly bacteria from infecting patients. Biologists at Cold Spring Harbor Laboratory (CSHL) have made an important discovery that helps explain how plants regulate the proliferation of their stem cells. Discovering the secrets of how one of the world's most popular prawn species produces sperm and transfers it to create the next generation could help free aquaculture from reliance on brood stock from the wild. Researchers at Iowa State University are rethinking the long-held conventional wisdom that turtles don't suffer some of the ravages of old age. A study of butterflies suggests that when a species adapts, other parts of its genetic make-upA  can be linked to that adaptation, limiting diversity in the population. Si ces consignes ne sont pas respectees, nous nous verrons oblige de fermer les commentaires au public ! Since the release of the CZ Scorpion EVO 3 S1 Pistol in October of 2014, CZ-USA has received many inquiries about the availability of the factory folding stock.
Obviously, an approved Form 1 is required to convert the CZ Scorpion EVO 3 S1 Pistol into an SBR.
We’re also working closely with a number of US manufacturers to ensure a variety of US-made parts are available from sources other than CZ-USA. We expect to begin selling the stocks as part of a 922r compliance kit in late summer (earlier if at all possible).
Retail cost of the compliance kit will be very reasonable, ensuring that a CZ Scorpion EVO 3 S1 SBR will remain one of the most reasonably priced pistol-caliber carbines available to the public.

On the plus side, you don’t have to add any engraving to it if you buy it in factory configuration (since the manufacturer already engraved their info). Also, the e-file form 1 is still running over a month faster than a paper form 4, although it is slowing. I’m still hopeful that one of the aftermarket trigger experts, like Timney or Geissele will help us bring up the domestic parts count with a drop-in aftermarket trigger. Yeah, considering the trigger group is 4 parts and the magazine is 3 parts, that would bring the total down to 9 and you’d be able to add the factory, Czech-made stock onto it. Does the U.S.-made trigger group fire without the trigger being pulled back, as illustrated by the woman in the third photo? And there are other opinion letters from the ATF (do some Google Searching) that is a contradiction to this ruling. Which caliber would provide the best odds of immediately stopping a motivated attacker with one shot at ranges under 25 yards?
Go take a look at shootingthebull ammo reviews for 147gr HSt 9mm and see if that might tend to discourage someone from being motivated.
I considered high-quality 9mm 147 grain hollowpoints and with a muzzle velocity of just over 1000 fps out of a 16 inch barrel, I am not all that confident that one shot is going to immediately incapacitate a motivated (e.g. In other words I picture the 9mm bullet creating a hole and the 10mm bullet creating an explosion in the attacker’s torso.
At any rate, you could do a pistol caliber carbine in .460 Rowland or in other calibers more powerful than 10mm anyway.
I am trying to stay away from suppressors because they are expensive, require ATF blessing to purchase and transport, decrease the maneuverability of a firearm, and represent a unnecessary component that can fail and degrade firearm function. I just got my brace tube last week because I liked the idea of less regulations related to traveling with a pistol versus an SBR. That could even be the base of a legal defense in the oddball chance someone received a 922r stand alone charge (which has never ever happened apparently).
The performance of either the pincers (pinch force) or the stinger (venom strength) can depend on scorpion physical characteristics, like size and shape. They found that pinch force and venom strength were highly variable but did correlate with specific physical characteristics of pincers and stingers. Van der Meijden sums up: "We found clear relationships between shape, performance, and behavior, even when taking their evolutionary history into account. It has always been CZ-USA’s intention to make the stock available to the public as soon as practicable.
The ATF has informed us that 922r does apply, and their official parts count for the Scorpion Pistol is 16 parts. That being said, until more qualifying 922r compliance parts are available from aftermarket sources, the factory stock will only be available as part of the kit including the required compliance parts.
At any rate, the rest of the compliance kit can’t come soon enough, as my SBR is currently a trigger group-less paperweight until it can become 922(r) compliant!
If you do a Form 1 to build it, like I did with my Scorpion, you have to put your info on it. My Scorpion form 4 from mid-February is at 57 days and still pending, but the average is 60 right now.

But I *did* configure my Scorpion into a legal SBR anyway by removing the trigger pack and the magazines. If you have the factory magazines and factory trigger components, they were clearly made there. If they were to make one with 8.28 more inches of barrel sticking out front they could put the stock on and call it a carbine. But the actual mechanism that the scorpion chooses to use when defending itselfa€”it can use the pincers, the stinger, or botha€”can depend on other evolutionary adaptations, so it's not clear whether their behavioral responses are actually correlated with maximum performance ability.
Scorpion behavioral defense responses were also highly variable, but importantly, also correlated with both the physical characteristics and performance measurements of pincers and stingers. CZ-USA is currently in the process of manufacturing a number of US-made parts which we intend to sell both individually and as part of a kit to ensure that individuals manufacturing SBRs have the means to comply with 922r.
If you buy a factory SBR, you have to pay for the firearm and it stays in your FFL’s possession until the Form 4 is approved (right now running about 90 days, which is super fast compared to the average over the last few years). It will still be subject to 922(r), though, but hopefully by that point CZ-USA is simply importing them with certain parts missing and finishing the assembly in the U.S. Pistol ammo is designed to burn all its powder and come up to full velocity within a full-sized pistol’s barrel. Most NFA items that actually shoot projectiles do need permission (form 5320.20) to bring across state lines, though.
Scorpions usually selected their strongest defensive behavior; for instance, species with strong pincers more often used their pincers in defense. If you build an AK from a bare receiver (or a sheet metal flat, for that matter), you’re still subject to 922(r) and can only have 10 imported parts from the list of 20 on the final product.
So an imported firearm that met that requirement is fine to have whatever number of imported parts on it because it’s exempt from 922(r). Maybe I have a CNC machine and I manufactured my own trigger parts, magazine parts, pistol grip, etc. Winning or losing is a big deal, yeah, but avoiding the prosecution in the first place is hugely important also. They tend to be clunky and awkward but, of course, this is because they were designed to have a shoulder stock. The approved Form 1 doesn’t mean turning it into an SBR meets 922(r) compliance without doing other things to the gun first.
No reason to deny a Form 1, as I’ve just proven it can be assembled into an SBR and stay compliant. I have kids, etc etc, and don’t feel like being the test case in a trial for a federal felony. But I still wouldn’t suggest posting photographs or videos of non-compliant firearms on public forums.
The ATF will rule on each individual firearm model separately because it rightly is a case-by-case basis.

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