IMI M855 5.56x45mm NATO Ammo 62 Grain SS109 Penetrator Full Metal Jacket (FMJ)

IMI SS109 5.56 case ammo gives shooters a proven bulk option built around the classic green tip profile. Additionally, this penetrator core rifle ammo adds better barrier penetration than standard ball loads. It ships as bulk quantity 5.56 ammo in your choice of case size. Furthermore, this 62 grain penetrator ammo also works well as AR-15 platform ammo for serious range use.

IMI Green Tip Rifle Ammo Specifications

• Caliber: 5.56x45mm NATO
• Bullet Weight: 62 Grain
• Bullet Type: SS109/M855 Penetrator, steel core, green-tip marked
• Case: Brass, boxer-primed, reloadable, IMI manufactured
• Muzzle Velocity: Approximately 3,000 fps
• Case Options: 420 or 1200 rounds
• Application: Duty-style training, barrier penetration, AR-15 platforms

Penetrator Core Rifle Ammo Built for Barrier Performance

Penetrator core rifle ammo like this IMI load holds up better against light barriers than pure lead-core bullets. Because the steel core sits ahead of a lead base, it adds weight and penetration without sacrificing reliability. Also, this design traces back to NATO standardization efforts. Shooters can browse the full rifle ammo lineup for other penetrator options, or compare against dedicated 223 Remington ammo for bolt-action rifles.

Bulk Quantity 5.56 Ammo: IMI Green Tip Rifle Ammo Value

Bulk quantity 5.56 ammo like this IMI load keeps cost per round low for shooters who train often. As a result, restocking the range bag takes far less time between trips. For the sealed ammo can format instead, see our IMI M855 62 Grain Ammo Can load.

62 Grain Penetrator Ammo: Heavier Than Standard Ball

62 grain penetrator ammo like this IMI load holds velocity better at distance than lighter 55 grain loads. Also, the slightly heavier bullet resists wind drift a bit more than standard ball ammo. Handloaders can pair recovered brass with our 5.56x45mm NATO ammo lineup when sourcing components.

AR-15 Platform Ammo for Reliable Cycling

AR-15 platform ammo like this IMI load cycles reliably across most gas-operated rifles. In short, this IMI green tip rifle ammo rounds out a well-stocked 5.56 lineup. For a lighter-format alternative, see our Winchester White Box 55 Grain FMJ load.

IMI Green Tip Rifle Ammo FAQs

What twist rate works best with this ammo?

IMI SS109 5.56 case ammo needs a 1:9 or faster twist rate to stabilize properly. Specifically, a 1:7 twist is the traditional military standard for this bullet weight. Slower twists like 1:12 may not stabilize this heavier bullet well. Therefore, check your barrel’s twist rate before choosing this load.

Is this ammo safe to fire in a 5.56 chambered AR-15?

Yes, IMI SS109 5.56 case ammo is loaded to 5.56x45mm NATO specifications and is safe in any properly headspaced 5.56 chamber. Additionally, it also safely cycles through .223 Wylde chambers. However, shooters should avoid firing 5.56 ammo in a rifle marked .223 Remington only, since chamber pressures differ. Always verify your barrel markings first.

Does this IMI green tip rifle ammo use reloadable brass?

IMI SS109 5.56 case ammo uses boxer-primed brass cases that are fully reloadable. As a result, handloaders can recover and reuse spent cases after firing. In addition, the steel penetrator core requires no special handling during normal reloading of the brass. This makes it a solid choice for reloaders.

What velocity does this ammo produce?

IMI SS109 5.56 case ammo produces approximately 3,000 feet per second from a 20-inch test barrel. Specifically, velocity runs somewhat lower from a shorter 16-inch AR-15 barrel. Therefore, shooters should chronograph their own rifle for exact data. Always review safe handling guidance from the National Shooting Sports Foundation before heading to the range.

How should I store this IMI green tip rifle ammo?

IMI SS109 5.56 case ammo should be stored in a cool, dry place away from direct sunlight. In addition, keeping ammo sealed in its original packaging prevents moisture exposure. Therefore, a sealed container or ammo can adds extra protection long term. Proper storage preserves reliable ignition for years.