Name: TX4 Standard Carbine
SKU: 11258
Availability: BackOrder

Introducing the TX4 Standard Carbine—a streamlined, high-performance solution engineered to Lone Star Armory’s exacting standards. Built around a durable, matched TX4 forged receiver set, this entry-level carbine delivers peak performance immediately, requiring no additional upgrades or modifications.

With a focus on simplicity and reliability, the TX4-S Carbine is optimized for new and intermediate users, yet assembled with the precision and durability to exceed military-grade specifications. Delivering LSA-grade accuracy and proven reliability, it achieves 1 MOA or better with match-grade ammunition.

Purpose-built and rigorously tested, the TX4-S excels across a variety of roles, from personal and home defense to professional law enforcement and military use in patrol and entry operations.

NOTE: A $60 surcharge for pinning and welding 14.5″ barrels applies.

TX4-S Carbines are built-to-order with a projected lead time of 4-6 weeks from order to shipping. Should delays occur, customers will be notified of status and updated as progress is made on fulfillment.

First-Responder and Military Discount Eligibility

For those who qualify for the First-Responder and Military Discount, we invite you to provide a copy of your credentials via email to sales@lonestararmory.us. Your dedication deserves recognition.

To purchase this product, a Federal Firearms License (FFL) is required. At checkout, please enter your FFL dealer as the receiving address (or include it in the notes, if you have other items in your cart that do not require an FFL for shipment. Your selected dealer will assist with completing an ATF Form 4473 and conducting a background check as needed. Please ask your dealer to email their FFL to FFL@lonestararmory.us with your name and order number included. This ensures we link the FFL to your order correctly and avoid any shipping delays. Any non-FFL items in your order will be shipped separately to your preferred address.

Before purchasing this product, please ensure that you are in compliance with all local, state, and federal laws and regulations, including the National Firearms Act (NFA). This product may be subject to NFA regulations, which may require registration and payment of a tax. It is the buyer’s responsibility to understand and adhere to these legal requirements. Consult with a legal expert or your local Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) office for guidance on NFA compliance.

Specifications

Caliber and Barrel Options
5.56 NATO: 11.3″, 14.5″ P/W, or 16″ Hanson profile, nitrided 4150 Chrome Moly Vanadium Steel barrel.
Note: A surcharge for pinning and welding 14.5″ barrels applies.

Bolt Carrier Group
LSA TX16 Mil-Spec BCG (Microbest OEM) with Sprinco Extra Power 5-Coil extractor Spring.

Operating System
Nitride-coated Mid-length (14.5″, or 16″) or Carbine-length gas system (11.3″) and a low-profile gas block, tuned with Sprinco buffer spring and appropriate buffers.

Muzzle Device
A2 flash hider (Forward Controls Design Dead Air-compatible suppressor-ready flash hider for 14.5″ pin and welds)

Rail/Handguard
Midwest Industries 7-face MLOK free-float handguard

Fire Control Group
LSA Mil-Spec AR-15 Trigger and Hammer

Butt Stock
Rifle/SBR: B5 Bravo stock mounted on a Mil-Spec 6 position receiver extension with a Mil-Spec castle nut and receiver endplate
Pistol: Magpul BSL brace in pistol format

Grip
Magpul MOE K2+ Grip

Charging Handle
Mil-Spec ambidextrous charging handle

System Controls
– Mil-Spec ambidextrous safety selector
– Enhanced bolt catch/release
– Billet/enhanced magazine button

THE TX4-S CARBINE IS PROUDLY BACKED AND SUPPORTED BY LSA’S FOREVER WARRANTY.

All Lone Star Armory platforms including the TX4-S Carbine are Berry Amendment-compliant, manufactured, and assembled entirely from American-designed and American-manufactured components in the United States for civilian, law enforcement, and military customers. LSA rifles are test-fired and factory-tuned, resulting in less felt-recoil and an increase in reliability and service life.