#Prototype

In this episode of TFBTV James Reeves interviews Mr. Stanislav Strizic, an engineer for CZ and a member of the design and testing team for the original CZ-75. Mr. Strizic designed a competition version of the Vz. 58 which was never commercially released, thus, only two prototypes exist.

Back in pre-pandemic times, Mark Serbu of Serbu Firearms brought to SHOT Show 2020 an interesting prototype of a semi-automatic rifle chambered in 5.56×45 mm, which he christened the Diabolus. Now, after about 17 months, we’re given the opportunity to get an update on the development of this firearm, thanks to Mark Serbu’s own YouTube channel.

Sharps Bros published on their social media pages pictures of a 3D printed prototype of what will eventually become an aluminum grip and Picatinny rail compatible stock adapter for Thompson/Center Contender rifles and pistols.

DNO Firearms has published a video where they test a DX-7 rifle with 3D printed polymer receivers. The DX-7 rifle is basically an improved AK that utilizes upper and lower receiver layout still using many standard AK parts with no or minor changes. The original DX-7 receivers are made of aluminum, however, looks like the design of these receivers will allow to successfully make their polymer versions, too. Let’s watch the mentioned video.

Pictured is an ultra minimal, highly compact submachine gun design which is a clear contender for the simplest ever conceived. Disassembled It consists of only nine parts including screws and springs. Almost every main component is fabricated using steel box section tube, including the one-piece thumb operated trigger.

Russian  Kalashnikov Gun Magazine has published several images of a semi-auto pistol that was designed by MOLOT Oruzhie, but because of the changes of Russian legislation was never manufactured. The pistol had a model designation VPO-514.

Kel-Tec has published on their social media pages images of a prototype rifle. It is a bullpup rifle with an unusual orientation of the magazine and a humongous 32″ long (813mm) barrel.

At an AUSA breakfast conference yesterday, US Army Chief of Staff General Mark Milley gave us a hint at exactly what the US Army’s next rifle could look like, and the focus was on extended range capability. The rifle, Milley said, will give a 10x improvement in capability through the type of ammunition, optics, and degree of chamber pressure specific to it, with the aim of providing the soldier a weapon with much more accuracy and range than the current M4 Carbine. Milley also clarified that the term “10x” was not intended to be a precise measurement of the capability growth, but rather a term indicating significant improvement. The new rifle will come as part of an effort that also includes new artillery, tanks, aircraft, and virtual reality training facilities, Milley said.

Looking like the bizarre lovechild of a bolt-action rifle, a boat oar, and those weird prop rifles from the original Planet of the Apes movie, the Thorneycroft Carbine is one of the unsung “firsts” of the 20th Century. Specifically, this British repeater is the world’s first military bullpup rifle. Ian McCollum of Forgotten Weapons gives us a real-time look at one of the Thorneycroft prototypes, located at the Royal Armouries museum:

Recently on The Firearm Blog we talked about one of the great might-have-beens, the German caseless G11 rifle developed by Heckler & Koch during the 1970s and 1980s. Today we have a video from 1990 filmed at Aberdeen Proving Grounds of a demonstration of the G11K2 on the firing range.

In the comments section of my recent Brief Thoughts article regarding caseless ammunition, there was a discussion about whether the cookoff issues of caseless would also be problem for LSAT-style polymer cased telescoped ammunition. Based on conversations I have had with subject matter experts regarding polymer cased ammunition in general, I noted that a lower cookoff threshold is one of the challenges I would expect CT ammunition developers to face. However, after some back-and-forth in the comments, I decided to contact LSAT/CTSAS program officer Kori Phillips regarding this issue (as it was not something I covered in my three-part interview with her), and she kindly agreed to allow her comments on the matter to be published here on TFB. They are below:

In the world of “might-have-been” small arms, a world of .276 Garands and NATO-standard EM-2s, none flew so high nor fell so far as the Heckler & Koch G11 caseless hyperburst assault rifle. Designed to out-match any contemporary small arm in a Cold War shootout across Central Europe, the G11 combined the aesthetics of a scifi plasma rifle with complexity of a Swiss watch. The result was a bullpup caseless wunderwaffe with a 2,000 round per minute hyperburst setting, and a price tag that, as the joke goes, compared unfavorably with reconstructing East Germany.

When the subject is the future of infantry, the conversation inevitably turns to one thing: Powered, armored exoskeletons. Since the publication of Heinlein’s Starship Troopers in 1959, the concept of an armored suit with enhanced mobility from an internal power source has fascinated military futurists, quickly solidifying as a military fiction staple, and even appearing repeatedly in official “future soldier” concepts from armies and companies around the world.

Caseless: The ammunition designer’s holy grail, and the engineer’s worst nightmare. It would obsolete the cartridge case overnight, resulting in cheaper, lighter, and more compact ammunition. Weapons would be able to carry 50, 60, or more rounds in slim, inexpensive magazines, and expel them at a rate of fire much higher than current weapons are capable of – not only because the ammunition is lighter and therefore more could be carried to feed such thirsty guns, but because the extraction and ejection cycles of the weapons themselves could be eliminated.

The roller-locked* Heckler & Koch G3 rifles and MP5 submachine guns have become iconic weapons of the Cold War era, being used in conflicts everywhere from civil wars in Africa, to hostage rescues and counter terror operations in Europe, to anti-cartel operations in South America. The operating system of these rifles is as unique as they are, and dates back to the death throes of the Nazi regime at the end of World War II. Desperate to save their failing state, the Nazis tasked engineers with developing new weapons, and the engineers were all to happy to oblige, lest they too be handed an old rifle and sent to the front!