Springfield Saint M-Lok AR-15 Rifle B5 5.56 NATO 16" ST916556B-B5

Manufacturer: Springfield Armory, Inc.

Model: SAINT M-Lok AR-15 Rifle, B5

Sku: ST916556B-B5

Caliber: 5.56x45mm NATO (.223 REM)

Capacity: (1) 30-Round Magpul PMAG Gen M3

Overall Length: 33" - 36.25" 

Weight: 6 lbs 4 oz

Upper Receiver: Forged 7075 T6 Aluminum, Type III Hardcoat Anodized, Forward Assist, M4 Feed Ramps

Lower Receiver: Forged 7075 T6 Aluminum, Type III Hardcoat Anodized, Accu-Tite™ Tension System

Barrel: 16" Chrome Moly Vanadium, 1:8 RH Twist, Melonite®

Muzzle Device:  A2 Flash Hider

Gas System: Direct Impingement Mid-Length, Pinned Gas Block

Trigger: Nickel Boron Coated GI

Sights: Low Profile adjustable Flip-Up

Stock: B5 Systems Bravo

Trigger Guard: B5 Systems, Polymer

Pistol Grip: B5 Systems Type 23 P-Grip

Handguard: B5 Systems Mid-Length, M-Lok

Buffer Assembly: Carbine "H" Heavy Tungsten Buffer

Receiver Extension: Mil-Spec

Bolt Carrier Group: M16 w/ Carpenter 158 Steel Bolt, HPT/MPI, Melonite®


All items are factory new in box unless otherwise stated. Based on the information available to us, the above specifications describe this item to the best of our knowledge.  For further information, please contact or visit the manufacturer's website.