Subsonic 7.62x391/31/2024 ![]() It cited a five-year indefinite delivery/indefinite quantity contract to provide a complete weapon system - Sig Sauer Rattlers in 5.56 mm and. The contract award in late September identified the program’s new name - the Reduced Signature Assault Rifle. Except for Sig Sauer, the vendors did not meet the technical requirements and/or the weapons do not meet the commercial definition,” it said. “We have meticulously reviewed each system for technical acceptance and whether it fits the commercial definition. In May 2022, Special Operations Command announced its intent to award the Personal Defense Weapon contract to Sig Sauer, acknowledging in a statement that “after years of continuous market research,” headquarters had concluded that Sig Sauer was the only vendor that could fulfill the need for the commercial Personal Defense Weapon requirement. John, senior director of government products at Sig Sauer. 300 Blackout, with the ability to convert the guns back to 5.56 mm, according to Jason St. Sig Sauer responded to the 2017 Personal Defense Weapon program with a version of its MCX “Rattler.” The command subsequently acquired approximately 340 of the guns with 5.5-inch barrels in. 300 Blackout in a potential short-barrel carbine configuration. Meanwhile, Special Operations Command elements continued to explore optimized barrel lengths and barrel twist rates for the. 300 Blackout for many special operators, with potential benefits from the 5.56 mm conversion kit ranging from the availability of training ammunition to addressing possible “shoot house” restrictions. Many gun and ammunition manufacturers believe that the combination of increased performance in the supersonic range and subsonic capabilities combined to “popularize” the. 300 Blackout provides a fully suppressible cartridge that is not available in 5.56 mm. At a comparable velocity, that translates to more energy on target.Īdditionally, on the subsonic side, the. 300 projectile falls within the general range of 110 to 120 grains. ![]() First, while most 5.56 mm operational projectiles fall within the general range of 55 to 77 grains, the. 300 Blackout provides several tactical differences when compared to the 5.56 mm. 300 Blackout to 5.56 mm in less than three minutes. The kits also needed to include a 5.56 mm barrel that allowed the weapon to be changed from. 300 Blackout cartridge, a system weight not to exceed 5.5 pounds, extended length not to extend 26 inches and length with stock collapsed or folded to be 17 inches, with the weapon fully functional when collapsed or folded. Kit requirements included conversion to fire the. The original program emerged in March 2017, when the command released an announcement seeking to identify “potential sources within the national technology and industrial base with the ability to provide a conversion kit for the 5.56 mm M4A1 to create a Personal Defense Weapon system.” ![]() The command is considering the addition of conversion kit options to incorporate 7.62x39 mm caliber ammunition, which is most used in the AK-47 series assault rifle, a “notice of intent” released late January stated. Special Operations Command is already looking to expand the capabilities of its Reduced Signature Assault Rifle - formerly known as the Personal Defense Weapon - before its manufacturer has even delivered the first weapon in the program. I got out of all such things in late 2019 and early (pre-Spring) 2020.U.S. My target average speed was 1050-1065 fps. For 300BLK I used cheap Federal cases (semi, so retrieval was not always guaranteed, so no expensive Lapua), CCI primers, H110 at 10 grains to start, with a 220 gr Sierra pointed or round nose bullet. It was a case of modify the rifle, make reloads, re-tune rifle, re-do reloads, re-tune rifle and do final reloads. Spending the time to tune the rifle for the subsonic was time consuming with no precise formula to follow I mean, there was a set of guidelines but they needed fined tuned for each rifle to achieve bolt hold open while still having the fastest round under 1100fps. ![]() I've made subsonic ammo before for various cartridges but only for manual repeaters and never 762 so not much help there, sorry.I have done it for Armalite Rifle model 15 platform rifles in 300BLK and 7.62x39mm. The 762x39 has more case capacity but it could be a starting point. 300 BLK subsonic will cycle an action but the gas system has to be correct.
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