Underwood 9mm +p+ 115gr - Xtreme Penetrator 20rd 10bx/cs

Underwood 9mm +P+ 115gr Xtreme Penetrator ammunition is purpose-built for law enforcement, military, and defensive shooters who demand maximum terminal performance in 9x19 platforms. This load operates at +P+ pressure levels, delivering velocity and energy significantly above standard 9mm specifications. Designed for barrier-blind performance, the Xtreme Penetrator round addresses a critical gap in defensive ammunition: consistent, deep penetration through intermediate barriers—vehicle glass, heavy clothing, drywall, and structural materials—without over-expansion or fragmentation that compromises trajectory.

The 115-grain projectile achieves its penetration profile through a solid copper or bonded-core construction that maintains integrity during barrier impact, unlike hollow-point designs that can fail on hard surfaces. Operating at +P+ pressures (approximately 1,300+ feet per second from a 4-inch barrel), this round generates kinetic energy comparable to heavier subsonic loads while maintaining the velocity profile preferred by modern tactical platforms. The 20-round per box configuration allows duty shooters to maintain adequate practice volume and training ammunition supply without excessive cost per round, critical for agencies and operators who conduct regular qualification and proficiency drills.

Law enforcement agencies, military units, and armed security professionals benefit most from barrier-blind ammunition when patrol environments include mixed urban terrain, vehicle stops, or high-risk warrant service. Verify firearm manufacturer pressure ratings before use, as +P+ loads exceed standard 9mm SAAMI specifications and may stress older or subcompact designs not rated for elevated pressures. This ammunition is suitable for Glock duty weapons, modern duty pistols rated for +P loads, and most AR-9 carbines. Each case contains ten 20-round boxes, enabling bulk training inventory or duty supply replenishment for small teams.