300 Blackout Build: My Covert Carbine

Published on July 6, 2018
Duration: 34:47

This video details the build process and features of a custom 300 Blackout Short Barreled Rifle (SBR) designed for covert carry and home defense. The build emphasizes compact size achieved through a folding stock adapter and a 7.5-inch barrel, while maintaining reliability and accuracy with specific component choices like an SLR Rifleworks handguard and Vortex optics. The speaker, demonstrating high authority, also covers NFA regulations and practical applications for the SBR.

Quick Summary

A 300 Blackout rifle is classified as a Short Barreled Rifle (SBR) under the NFA if it has a barrel under 16 inches and a shoulder stock. This build features a 7.5-inch barrel and stock, requiring NFA registration and a tax stamp. Despite its short barrel, it achieves sub-1-inch accuracy at 100 yards with handloads.

Chapters

  1. 00:00Introduction: 300 Blackout SBR Build
  2. 02:25NFA Regulations and SBR Definition
  3. 03:10300 Blackout Caliber Choice and Accuracy
  4. 04:45Build Evolution: Pistol to SBR Conversion
  5. 08:38Receivers and Barrel Specs: Anderson AM-15
  6. 10:33Reliability: Cycling Subsonic Ammo
  7. 12:01Muzzle Device and Rail System: SilencerCo & SLR
  8. 13:05Grips and Weapon Light: BCM & Inforce
  9. 14:53Optics: Vortex Viper PST & Venom
  10. 18:19Folding Stock and Sling: Law Tactical & BCM
  11. 19:52Trigger and DOPE Chart
  12. 22:21Cerakote and Suppression Management
  13. 25:26Legal Considerations for SBR Travel
  14. 26:53Hunting Applications for 300 Blackout SBR
  15. 28:38Covert Carry: Vertx Gamut Bag Integration

Frequently Asked Questions

What makes a 300 Blackout rifle a Short Barreled Rifle (SBR)?

A firearm is classified as an SBR under the National Firearms Act (NFA) if it has a barrel less than 16 inches in length and is designed or intended to be fired from the shoulder with a rifle stock. This build features a 7.5-inch barrel and a stock, making it an SBR.

How accurate is a 7.5-inch 300 Blackout barrel?

Despite its short length, a 7.5-inch 300 Blackout barrel can be highly accurate. The speaker demonstrates cloverleaf groups at 25-50 yards and sub-1-inch groups at 100 yards using specific handloads, debunking myths about short barrels being inherently inaccurate.

What are the legal requirements for traveling with an SBR?

Traveling across state lines with an NFA-registered Short Barreled Rifle (SBR) requires prior written approval from the ATF. You must file ATF Form 5320.20, Application for Interstate or Export Shipment of Firearms, to legally transport the SBR into another state.

How can a 300 Blackout SBR be made more covert for transport?

A key modification for covert transport is the use of a Law Tactical folding stock adapter. This allows the rifle to fold, significantly reducing its overall length and enabling it to be discreetly carried in a standard backpack like the Vertx Gamut.

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