Springfield Armory

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

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5.56 NATO

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®

This is the SAINT® for the rugged individualist who appreciates the classics. The lightweight mid-length direct gas impingement operating system offers superlative reliability. Top-end B5 Systems furniture combines comfort with ample M-Lok® space so you can customize your SAINT to fit your unique personality. The traditional front sight base is both unbreakable and foolproof. A 16" chrome moly vanadium Melonite-coated 1:8"-twist barrel strikes the perfect balance between compact portability and rugged performance.

Unlike many AR-15s on the market, the SAINT family of rifles feature an upgraded trigger right out of the box. The nickel boron-coated GI single-stage trigger operates smoothly and provides a clean, grit-free pull. These M-LOK compatible SAINTs also use a mid-length gas system with an “H” heavy tungsten buffer, designed to mitigate snappy recoil and ensure a smooth, accurate, and comfortable shooting experience. The Accu-Tite™ tension system provides a tight, wobble-free fit between the upper and lower receivers, which are constructed from Type III hard anodized aircraft-grade 7075 T6 aluminum.

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