The Mark-1 Project
The Mark-1 Project

5.56X45MM, 55GR, Mark-1- Christmas Special - 500CT

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MARK-1 Special: $31.00
Out of stock

You will receive: 500 Rounds of 5.56 55GR FMJ ARMSCOR Brass Casing  + Ammo Can + Hat + Amend 2 Mag + Free collectors decal

Experience the pinnacle of ammunition craftsmanship with Mark-1's 5.56x45mm 55gr cartridges. Precision-engineered for unparalleled performance.

Caliber5.56x45mm NATO Casing MaterialBrass Muzzle EnergyApproximately 1 , 211.3 ft-lbs 1,211.3 ft-lbs for a 55gr bullet traveling at 3,109 fps. ft-lbs Muzzle VelocityApproximately 3,109 fps when fired from a 24-inch barrel. FPS Powder TypeBall Powder Primer TypeBOXER Bullet TypeFULL METAL JACKET (FMJ) Grain Weight55 GRAINS Package Dimensions11.5X7.25X5.06 inches Package Weight12.8 lbs Packaging TypeAmmo Can Round Count Per Package500 rounds

THE CHRISTMAS SPECIAL: Buddy the elf packed it full for everyone on the nice list! Includes a custom Amend2 5.56 magazine, stylish dad hat, sturdy ammo can, two collectors stickers, and to top it off, 500 rounds of 5.56 55GR ammo. It's everything you need to make your holiday season extra special! 

 Featuring ARMSCOR BATCH: 

As Promised: Transitioning to Excellence As part of our unwavering commitment to quality, we've made a significant change: We've stopped using ZSR cases and have upgraded to premium ARMSCOR BATCH cases for our MARK-1 5.56 ammunition.

Ammo Specs
5.56x45mm NATO
Casing Material
Muzzle Energy
Approximately 1 , 211.3 ft-lbs 1,211.3 ft-lbs for a 55gr bullet traveling at 3,109 fps.ft-lbs
Muzzle Velocity
Approximately 3,109 fps when fired from a 24-inch barrel. FPS
Powder Type
Ball Powder
Primer Type
Bullet Type
Grain Weight
Packaging Details
Package Dimensions
Package Weight
12.8 lbs
Packaging Type
  • Ammo Can
Round Count Per Package
500 rounds
Advanced Performance Metrics
Firearm Compatibility
Ensure your firearm is rated for 5.56mm before using it, AR-15/M16/M4 Platform Rifles, Ruger Mini-14, Steyr AUG, HK416, FN SCAR-L (MK 16), Sig Sauer SIG556, Tavor (IWI), CZ Bren 2, LWRC M6
Quality Assurance
Triple-checked using state-of-the-art technology to ensure each bullet meets our rigorous quality standards.
Expertly engineered for a balanced flight trajectory, our FMJ bullet maintains a true course to your target.
Minimized muzzle flash for discreet shooting, ideal for low-light conditions.
Optimized case and bullet design to ensure smooth feeding in semi-automatic firearms.
Manufactured under tight tolerances to ensure uniformity across rounds, resulting in repeatable performance shot after shot.
Barrier Penetration
Solid FMJ construction designed to maintain integrity even when encountering barriers.
Designed for a manageable and predictable recoil, enabling faster follow-up shots and improved shooting comfort.
5 out of 5
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Jae Kim
What do you like about the product?
Awesome! Cool bundle with everything in it!
10/10 recommend, cool custom magazine too!
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