Complete Upper Receiver Duty Optimized

Description

Each order/rifle is hand-built and undergoes a 50-point inspection during the build, including a test fire. 

TGI SHTF-15 Upper Receiver Duty Optimized Spec Sheet:

• 14.5″ 4150 CMV Nitrided Medium Profile Barrel – Mid-Length Gas| standard
  • We chose this barrel length and barrel material for a specific reason. Wanting to hold true to our ethos of providing reliable work-guns for any use and role. This barrel is both accurate and able to handle a high-volume of fire in any scenario, while maintaining and repeating a high level of performance for thousands upon thousands of rounds. 14.5″ ballistically makes a lot of sense for those wanting to trim barrel length for better portability and maneuverability without giving up too much in terms of velocity. Medium profile to handle the heat build up that comes with longer and more consistent strings of fire.
  • 4150 CMV is a steel-alloy known for its durability and tensile strength. Nitride is a treatment process which is used to enhance the properties of the material being treated. Nitriding provides better accuracy than chrome-lining due to no new materials being added and the nitride imbuing into the steel alloy itself, higher abrasion resistance is gained from the nitriding, as well as corrosion resistance and heat resistance.  Trust this barrel to perform for you again, and again, no matter the circumstances.
• .223 Wylde chamber (multi-cal) | standard
  • Capable of firing both .223 and 5.56 ammunition. This chambering comes with the same diameter dimensions as the 5.56 chamber, allowing it to safely fire the higher pressured 5.56 cartridge, and maintain the reliability in cycling that comes with this larger bored chamber. .223 Wylde chambers however, like the .223 chamber, have a shorter and tighter free-bore and lead. This leads to higher accuracy potential due to the bullet being fired hitting the rifled-portion of the barrel quicker.
• 1:8 twist rate barrel | standard
  • 1:7 twist is the mil-spec standard, and has been the standard among “civilian” equivalents for years due to this. However, recently many manufacturers have begun to go to the slightly slower rifling twist of 1:8 due to the data showing that the lighter/shorter length bullets perform better in a slightly slower twist rifle barrel. Specifically both the M193 55-grain and the M855 62-grain projectiles. 1-2 MOA +/- depending on the shooter and ammunition used with most 55-69 projectiles.
• Bolt/BCG
  • DS Arms Sand-Cut Bolt Carrier Group 
    • Designed utilizing FAL/L1A1 style sand cuts across all load bearing surfaces of the carrier itself, these cuts in the material allow any sand, dirt, or other debris that get into the receiver itself, to be easily cycled out. 
    • Carrier made of 8620 shot-peened steel to increase hardness and wearability, chrome lined to increase heat resistance and extend part-life, parkerized exterior to increase corrosion resistance.
    • Bolt is made of 9310 Super Alloy Steel, stronger than carpenter steel. MPI tested. Hardened steel extractor, with heavy duty extractor spring. Parkerized exterior.
    • Firing pin, retaining pin, and cam pin all made of hardened steel with exterior finishes to increase wearability and corrosion resistance.
      • Carrier made of 8620 shot-peened steel to increase hardness and wearability, nitride finish.
      • Bolt is made of 9310 Super Alloy Steel, stronger than carpenter steel. MPI tested. Hardened steel extractor, with heavy duty extractor spring. Nitride finish.
      • Firing pin, retaining pin, and cam pin all made of hardened steel with exterior finishes to increase wearability and corrosion resistance.
• Handguard – Rail System
  • Midwest Industries Night Fighter M-LOK Handguard 13.5″ | standard
    • Made to minimize handguard flex this handguard/rail system was developed and manufactured utilizing an ultra-rigid design, and featuring a 2.25″ 4140 steel heat treated barrel nut, with this expect minimal impact shift with popular laser aiming devices that the shooter may utilize. A continuous MIL-STD 1913 Picatinny top rail, and then an additional seven sides of M-LOK, this rail has plenty of space for any and all your accessories. With a slim 1.5″ exterior diameter and a 1.25″ inner diameter it is still comfortable to the shooter and easy to get a solid grip around. Featuring rigidity ribbing at the top, and made out of high-quality aluminum the handguard, while slim, maintains its rigidity and durability at a high margin.
  • Midwest Industries Combat Rail M-LOK Handguard 14″ | SHTF-15 Standard
• SHTF Ambidextrous Gas Buster Charging Handle | standard 
  • Made from 7075-T6 aluminum, this charging handle in addition to the larger and ambidextrous handle itself which allows for the easy manipulation of the charging handle, also features a raised shelf at the rear of the shaft to help block any excess gas that may be exiting the receiver towards the shooter’s face. A great addition to limit gas blowback, especially while shooting suppressed.
• Muzzle Device (All muzzle devices will be pinned and welded unless otherwise specified in order notes. Does not apply to upper receivers.)
  • A2 Birdcage | standard
    • A dependable and solid muzzle device which does a good job at reducing signature, dampening recoil, and dissipating gas. Long and short versions available. Long will be pinned and welded to meet NFA requirements of 16″ overall barrel length to avoid SBR (short-barreled rifle) designation.
  • SilencerCo ASR Mounts | Quick Attach/Detach System that threads over your muzzle device. Pinned and Welded to the barrel for NFA requirements.
    • 3-Prong Flash Hider | Specially tuned to limit barrel harmonics which could affect accuracy, while effectively limiting muzzle flash.
    • Muzzle Brake | Ported to dissipate gas outwards and to the sides, this helps dampen recoil effectively and keeps the muzzle from having too much rise. 
    • Closed-Tine Flash Hider | Designed to keep debris from snagging on branches, gear, and other debris. Suppresses muzzle flash/signature.
• Receiver Set | standard
  • 7075-T6 aluminum forging, MIL-A-8625 Type III anodized | black

For upper receiver orders, if you wish to have the muzzle device selected pinned and welded, please make note of that in your orders notes when checking out. By default, any complete upper receiver set order will not undergo pin & welding.

Order fulfillment is typically 5-10 days.