3 PACK
Supplemental Transit/Impact/Dust Cover for the 5.56x45 MFT Magazine. Designed to protect the top of the magazine/cartridge, minimize debris interference and nest flush during storage and transit.
.300 Blackout vs. 5.56 NATO Disclaimer
While .300 AAC Blackout (also known as 300 BLK) and 5.56 NATO cartridges are designed for use in AR-style rifles, they are not interchangeable and must never be confused or cross-loaded. Firing a .300 Blackout round in a 5.56 NATO chamber can result in catastrophic failure, as the larger diameter of the .300 BLK bullet may not fit properly in the 5.56 barrel—leading to a barrel obstruction and potentially serious injury or damage.
Though both cartridges can be used with similar bolt carrier groups and magazines, it is critical that shooters take extreme care when switching between calibers, especially when using rifles with interchangeable uppers or multi-caliber setups.
Always verify the ammunition you are loading matches the markings on your barrel and upper receiver. Mixing up .300 Blackout and 5.56 NATO can lead to dangerous malfunctions, injury, or death. When in doubt, double-check.