Fórum Defesa Brasil

J.Ricardo escreveu: Sáb Mar 22, 2025 9:45 am Type 20 do exército japonês, pouco falado sobre, mas muito relevante por esta entrando em operação em umas das maiores forças armadas do mundo.
Além de parecer um ótimo fuzil, destaco a munição dele, criada para perfurar as mais modernas armaduras pessoais militares.

fonte: https://sadefensejournal.com/japans-new ... ult-rifle/

Importantly, however, a new 5.56x45mm cartridge known as the J-3 high-power cartridge was developed specifically for the Type 20 weapon. The J-3 was designed by the ammunition and precision engineering division of the Japanese company Asahi-Seki. The cartridge weighs 12g (0.4 oz.), is 57.4mm long, is made from steel and red brass, and uses double-base powder. The bullet has a monolithic, high-strength material core. Even though the barrel of the Type 20 is shorter, the combination with the J-3 creates a more powerful bullet designed to penetrate modern body armor.

The U.S. Army is facing internal criticism over the new M7 (XM7) assault rifle chambered in 6.8×51mm, which began field trials with frontline units in late 2023.

Captain Braden Trent of the U.S. Army visited the 1st Brigade Combat Team “Bastogne” of the 101st Airborne Division, where he surveyed over 150 soldiers and examined 23 XM7 rifles. According to him, the results show that the XM7 underperforms compared to the current M4A1.

Testing with subject matter experts, ballistic studies, and soldier feedback all point to the XM7 being unsuitable as a modern battle rifle.
Trent stated at the Modern Day Marine exhibition.

Key findings from Trent’s 52-page report include:

- Limited magazine capacity: The XM7 uses 20-round magazines, unlike the M4A1’s 30-rounders. Troops carry 140 rounds (7 mags) versus 210 rounds with the M4 a significant reduction during combat drills.

- Barrel wear: Visible pitting and scratching appear after just 2,000 rounds, potentially reducing accuracy and reliability.

- Weight and bulk: The XM7 weighs 8.38 lbs without suppressor and 9.84 lbs with suppressor, compared to 6.34 lbs for the M4, which affects maneuverability, especially during long missions.

- Tactical irrelevance: Trent argues that most engagements occur within 300 meters, where the extended range advantage of the 6.8×51mm round is negligible. He sees the XM7 as better suited to a designated marksman role, not as a general infantry rifle.

- Reliability issues: Some soldiers reported ejection problems even with proper cleaning and gas setting adjustments, suppressor failures, and difficulty using blank firing adapters.

Pablo Maica escreveu: Qua Mai 14, 2025 11:08 pm A Sig já teve que contratar praticamente todos os ex Devgru ainda vivos pra fazer propaganda pra P-320, e tentar abafar todos os casos de disparo involuntário, agora pelo visto vai ter que começar a recrutar os veteranos do CAG para fezer lobby pra essa coisa.


Um abraço e t+

cabeça de martelo escreveu: Ter Jun 03, 2025 7:32 am

cabeça de martelo escreveu: Qui Jun 12, 2025 12:36 pm Bundeswehr inicia substituição do fuzil padrão com moderno G95 a partir de 2025



https://www.forte.jor.br/2025/06/11/bun ... r-de-2025/