STNGR 12.5 Inch 5.56 Complete Upper w/ 13.5 Inch HWKXL® Handguard, BCG & CH - Black

STNGR 12.5 Inch 5.56 Complete Upper w/ 13.5 Inch HWKXL® Handguard, BCG & CH

Starting at:
$638.99

STNGR 12.5" 5.56 Complete Upper with 13.5" HWKXL® Suppressor-Ready Handguard, BCG & CH

This complete upper from STNGR delivers a balanced, versatile platform for shooters who want a compact setup with suppressor-ready capabilities. The 12.5-inch barrel hits the sweet spot for velocity and maneuverability, making it ideal for home defense, patrol work, or all-purpose range use where you want something more capable than a 10.5-inch pistol but still compact enough to move with. The 13.5-inch HWKXL handguard extends past the muzzle for that clean, tucked look, perfect if you're planning to add a suppressor down the line.

The KAK 12.5-inch barrel in 5.56 NATO pairs with a mid-length gas system for smooth, reliable cycling and reduced recoil compared to carbine-length systems. The STNGR HWKXL handguard is built from 6061-T6 aluminum with M-LOK slots at 3, 6, and 9 o'clock, plus QD sling points front and rear. At just 8.7 ounces, it keeps the weight down while giving you a full-length top rail and plenty of room to mount lights, lasers, and grips.

This upper comes fully assembled and ready to run. STNGR includes their phosphate chrome-lined M16 bolt carrier group with a C158 bolt and a standard GI charging handle. Built on AT3's slick side billet upper receiver with a low-profile .750 steel gas block, mid-length stainless gas tube, and KAK Slimline flash can.

Features

  • 12.5-inch KAK barrel with mid-length gas system for smooth cycling
  • 13.5-inch STNGR HWKXL handguard with suppressor-ready design for tucked muzzle devices
  • M-LOK slots at 3, 6, and 9 o'clock with QD sling points front and rear
  • Full-length top Picatinny rail for optics and accessories
  • STNGR phosphate chrome-lined BCG with C158 bolt and standard GI charging handle included
  • Slick side billet upper receiver for clean lines
  • KAK Slimline flash can redirects muzzle blast forward
  • Available in Black, Flat Dark Earth, and OD Green

Specifications

  • Brand: STNGR
  • Model: 12.5 Inch 5.56 Complete Upper w/ 13.5 Inch HWKXL® Handguard, BCG & CH
  • MPN: STNGR-CU-P-HWKXL-125
  • Caliber: 5.56 NATO
  • Barrel Length: 12.5 inches
  • Gas System: Mid-length
  • Handguard Length: 13.5 inches (actual 13.75 inches)
  • Handguard Type: M-LOK free-float
  • Handguard Material: 6061-T6 Aluminum
  • Handguard Weight: 8.7 ounces
  • Inside Diameter: 1.75 inches
  • Upper Receiver: Slick side billet
  • Gas Block: .750 low-profile steel
  • Bolt Carrier Group: STNGR phosphate chrome-lined M16 with C158 bolt
  • Charging Handle: Standard GI
  • Muzzle Device: KAK Slimline flash can (1/2x28 thread)
  • Color Options:
    • Black - Type 3 Hardcoat Anodized
    • Flat Dark Earth - H-267 Cerakote Magpul® Flat Dark Earth
    • OD Green - H-232 Cerakote Magpul® OD Green

What's Included - Installed

  • 1x Assembled Upper Receiver
  • 1x 13.5" STNGR HWKXL M-LOK Handguard
  • 1x 12.5" KAK 5.56 NATO Barrel
  • 1x KAK Slimline Flash Can
  • 1x 1/2" Crush Washer
  • 1x Mid-Length Gas Tube
  • 1x Low-Profile Gas Block
  • 1x STNGR Phosphate Chrome-Lined BCG
  • 1x Standard GI Charging Handle