STNGR 10.5 Inch 300BLK Complete Upper w/ 13.5 Inch HWKXL® Handguard, BCG & CH

STNGR 10.5″ 300 BLK Complete Upper with 13.5″ HWKXL® Suppressor-Ready Handguard, BCG & CH

This complete upper from STNGR delivers a purpose-built 300 BLK platform for shooters who want maximum versatility in a compact package. The 10.5-inch barrel is the sweet spot for 300 BLK—whether you’re running supersonic loads for hunting and home defense or subsonic rounds with a suppressor for quiet work. This is the foundation for suppressor hosts, hunting rifles, and close-quarters setups where you need hard-hitting performance without the length. 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 AT3 10.5-inch medium profile barrel in 300 BLK pairs with a pistol-length gas system for reliable cycling with both supersonic and subsonic ammunition. 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. The KAK 5-inch extended flash can gives you extra length to fill the handguard and redirect concussion forward.

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 and pistol-length stainless gas tube. Available in Black, Flat Dark Earth, and OD Green to match your build.

Features

• 10.5-inch medium profile barrel with pistol-length gas system for reliable cycling with supersonic and subsonic loads
• 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 5-inch extended flash can redirects muzzle blast forward
• Available in Black, Flat Dark Earth, and OD Green

Specifications

• Brand: STNGR
• Model: 10.5 Inch 300BLK Complete Upper w/ 13.5 Inch HWKXL® Handguard, BCG & CH
• MPN: STNGR-CU-P-HWKXL-105-BLK-300
• Caliber: 300 BLK
• Barrel Length: 10.5 inches
• Barrel Profile: Medium
• Gas System: Pistol-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 5-inch extended flash can (5/8×24 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 10.5″ AT3 300 BLK Medium Profile Barrel
• 1x KAK 5″ Extended Flash Can
• 1x 5/8″ Crush Washer
• 1x Pistol-Length Gas Tube
• 1x Low-Profile Gas Block
• 1x STNGR Phosphate Chrome-Lined BCG
• 1x Standard GI Charging Handle