TGI Founders Rifle


TGI SHTF-15 Founders Rifle – What we personally run and rely on. | Purpose-Built, Work Guns. Rifles Made to Last. The SHTF line is the one thing you won’t have to worry about when it matters most.

SKU: 28157


TGI Founders Rifle Spec Sheet:

  • .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 ammunition, 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” builds for years due to this. However, recently many manufacturers have begun to go to the slightly slower rifling twist in 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 MOA or better depending on the shooter and ammunition used with most 55-69 projectiles.
  • 14.5″ 4150 CMV Nitride Barrel | 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.
    • 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.
  • Trigger
    • ALG Defense Advanced Combat Trigger (ACT) | stanard
      • Using the same parts as the QMS trigger which comes stock in our rifles, the ACT trigger uses a Nickel-Boron plating on the trigger to increase surface hardness and wear resistance. The internal trigger hammer and disconnector are Nickel-Teflon coated to lower friction coefficients while adding wear resistance. Expect a very crisp and sharp trigger pull each time with this triggers added properties.
  • VLTOR A5 Buffer System | standard
    • H3, 5.5 oz. | standard
      • Best all around weight. Great ejection pattern. Quick follow up shots. Solid recoil control.
  • Bolt/BCG
    • DS Arms Sand-Cut Low Mass Bolt Carrier Group | In addition to the FAL/L1A1 style sand cuts this bolt carrier has additional lightening cuts added to the carrier itself to reduce mass and weight of the overall BCG. Saving the user 2.30 oz. of overall weight in addition to the innovative sand cuts. This carrier and bolt also feature a nitride finish in place of the phosphate or parkerized finish. This treatment adds abrasive, heat, and corrosive resistance properties to the steel alloy materials used.
      • Carrier made of 8620 shot-peened steel to increase hardness and wearability, nitride finish.
      • Bolt 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 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.
  • SHTF45/90 Short/Full Throw Ambidextrous Safety Selector | standard
    • The SHTF45/90 is an ambidextrous safety selector that can be installed in both 45 or 90 degree throw. With both a short and full (long) throw it is designed to not get in the way of your index finger while shooting, placing your finger along the trigger well. Expect a smooth and crisp lockup when going from safe to fire and vis versa.
  • Pistol Grip
    • TGI Grunt Grip (A2 Variant) | standard 
      • A take on the original A2 grip of the M-16, TGI added our own features to step-up the game of this tried and true pistol grip. An aggressive beaver-tail allows for a comfortable and solid grasp all the way around the grip. Stippling was added in key areas around the grip to increase the shooter’s grasp and hold of the rifle. A thumb indent allows for the natural rest of the hand to increase comfortability and make it an easy and intuitive hold for the shooter regardless of position. Manufactured from nylon-12 this pistol grip is as durable as it is comfortable.
  • Buttstock
    • Magpul MOE SL
      • Similar to the Bravo stock, this allows for multiple positioning on the buffer tube itself, and also features a raised cheek weld for the shooter. This buttstock is slimmer in multiple areas and features a smaller rear portion to allow for better comfort and fit regardless of any armor or other gear which may be getting in the way of establishing and maintaining proper butt-stock positioning in your shoulder pocket.
  • Muzzle Device
    • SilencerCo | ASR Mounts – Quick Attach/Detach System that threads over your muzzle device. Ability to Pin and Weld to the barrel for NFA requirements.
      • 3-Prong Flash Hider
  • Receiver Set | standard
    • 7075-T6 aluminum forging, MIL-A-8625 Type III anodized | black


Muzzle device will be pinned and welded to meet NFA requirements of 16″ barrel, unless otherwise specified in order notes or you can email with your order number and instructions to not pin and weld the muzzle device. You will need to send this to a FFL Dealer who also holds an SOT and go through the tax-stamp process with them as this would be considered an SBR (short-barreled rifle) without the pin and weld. 

Lead times are currently 30-60 days from order date. We will update you individually regarding your purchase.

Additional information


14.5" 4150 CMV Nitride


DS Arms Sand-Cut Low Mass Bolt Carrier Group

Buffer Weight

H3, 5.5 oz.


Magpul MOE SL


MWI Night Fighter M-LOK Handguard 13.5"

Muzzle Device

Silencer Co. ASR 3 Prong

Pistol Grip

TGI Grunt Grip (A2 Variant)

Safety Selector

Left-Handed Oriented, Right-Handed Oriented