The Sig Sauer E300A220 Elite Match Grade 300 Blackout 220gr Open Tip Match delivers subsonic performance for suppressed AR platforms and brings together the trusted Elite Match Grade series reputation with 220 grain Sierra Match King bullets to give long-range precision, reliable terminal performance, and a reduced sound signature during follow-up shots. Designed to cycle with mil-spec 5.56 NATO bolts and magazines, this 300 AAC Blackout load lets you convert an existing AR lower for low-noise target work and tactical training without changing key components, while the match grade brass casing supports consistent chambering and extraction for repeatable groups. With an advertised muzzle velocity near 1000 fps and muzzle energy around 488 ftlbs, shooters will notice a stable trajectory and predictable downrange behavior ideal for benchrest and precision suppressed shooting at subsonic velocities. If you run suppressors, attend match days, or are dialing in a dedicated 300BLK upper, the E300A220 delivers the ballistics and Open Tip Match construction expected from Sig Sauers Elite Match line, making it a go-to choice for target shooters and serious AR owners seeking accurate, low-noise performance.