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21ST Tec Tec GIII 308 Win 16" Barrel 20+1 Capacity

G3 Magazines

The TEC-GIII rises to meet the demands of both enthusiasts and professionals by integrating the proven functionality
of G3 magazines with the familiar and trusted components of the AR10 platform.

Featuring a Direct Impingement (DI) system, the TEC-GIII  a 16-inch barrel chambered in .308/7.62 NATO with a 1:10 twist for balanced maneuverability The rifle’s receivers
are precision-machined from Billet T6 Aircraft Aluminum, ensuring a solid foundation for sustained
durability. An adjustable gas block enables the rifle to be tuned for suppressor use, while the controls
adhere to the standard safe and semi-automatic settings for user familiarity.
The TEC-GIII caters to operator comfort with a Mil-Spec buffer tube, a 6-position adjustable CCS Carbine
stock, and a THRIL RTG grip, allowing for a customized fit. A 15-inch M-LOK handguard, featuring an
integrated MIL1913 Rail, offers ample space for accessories. The rifle’s balance is optimized with a
weight of 8.5lbs and an adjustable overall length from 35 to 39 inches, providing a comfortable and

adaptable shooting platform. Additionally, the TEC-GIII is fitted with a Nickel Boron Trigger for a smooth,
consistent pull and a Flash Hider with 5/8x24 muzzle threads.

PARTS compatibility list with DPMS pattern LR308/AR10 Rifles:
- Firing Pin
- Bolt Assembly
- Cam Pin
- Gas Key
- Dust Cover
- Forward Assist
- Charging handle
- High Rail/Handguard/Barrel Nut
- Lower Parts Kit
- Mil-Spec Carbine buffer tube assembly, buffer and recoil spring for .308

Specifications
Specifications
 
  • MANUFACTURER: 21ST TEC
  • FAMILY: AR10
  • MODEL: Tec GIII
  • TYPE: Rifle
  • ACTION: Semi-Automatic
  • CALIBER/GAUGE: 308 Win
  • BARREL: 16"
    • CAPACITY: 20 Round