https://vizardsgunsandammo.com/bbm-556fm55ba-5-56x45-battlepk-20-10/?utm_source=Vizards+Guns+And+Ammo+news+letter&utm_campaign=a408f717f2-EMAIL_CAMPAIGN_2018_07_17_06_21_COPY_01&utm_medium=email&utm_term=0_6872f3eb95-a408f717f2-168395305&goal=0_6872f3eb95-a408f717f2-168395305&mc_cid=a408f717f2&mc_eid=31ddb472bc

BBM's non-corrosive military-grade ammo is made with reloadable brass. The 5.56 NATO is loaded with a 55 GR FMJBT ball M193 bullet for 1247 ft lbs of energy and a velocity of 3166 fps.This 5.56x45mm ammo comes packaged in 20 rounds per box 10 boxes in a PVC sheath for a total of 200 rounds. 

BBM 556FM55BA 5.56X45 BAT-PK 200RDS 
Mfg Item Num: 556FM55BA 
Model Number: Target 
Purpose: Hunting/Target 
Series: Battlepack 
Unit of measure: PK 
Caliber: 223 Remington/5.56 NATO
Bullet Type: Full Metal Jacket Boat Tail
Bullet Weight: 55 GR
Muzzle Energy: 1247 ft lbs
Muzzle Velocity: 3166 fps
Rounds Per Box: 200
Application: Target/Competition
Casing Material: Brass