Description
Colt M4 Commando CR6933 SBR
When you need a rifle that performs without compromise in close quarters, the Colt M4 Commando CR6933 stands ready. This isn’t just another short-barreled rifle—it’s a Colt, built with the same attention to detail that has made their firearms trusted by professionals for decades. The 11.5-inch barrel provides the ideal balance between maneuverability and ballistic performance, making this SBR equally at home in vehicle operations, home defense scenarios, or as a compact patrol rifle.
What Makes This Colt SBR Different
Many SBRs on the market start as longer rifles that get cut down. The Colt M4 Commando CR6933 was designed from the ground up as a short-barreled rifle. The 11.5-inch barrel features a 1:7 twist rate specifically optimized for stabilizing heavier 5.56mm projectiles that maintain terminal effectiveness even from the shorter barrel. The gas system is properly tuned for this configuration, resulting in reliable cycling with both standard and reduced-power ammunition. When you handle this rifle, you’ll notice the balance point sits perfectly at the magazine well—a testament to Colt’s engineering that makes this SBR feel natural in your hands rather than front-heavy like many converted rifles.
Specifications
- Manufacturer: Colt
- Model: M4 Commando CR6933
- Caliber: 5.56mm NATO
- Action: Semi-automatic, closed bolt
- Barrel Length: 11.5 inches
- Barrel Twist: 1:7
- Overall Length: 27.5 to 30.75 inches (collapsed to extended)
- Thread Pitch: 1/2×28
- Weight: 6 pounds 3.36 ounces
- Finish: Matte black
- Magazine Capacity: 30 rounds
- Warranty: Lifetime
California Ownership Considerations
For California residents, this Colt SBR represents a viable option within our state’s complex firearms regulations. The 11.5-inch barrel keeps the overall length manageable while maintaining effectiveness with 5.56mm ammunition. Many California shooters appreciate the compact form factor for storage in secure containers or safes where space is limited. At calgunsdepot, we work with customers throughout the Sacramento area and beyond to ensure proper NFA compliance, including the required Form 4 transfer through your local FFL. This rifle’s semi-automatic operation and fixed magazine configuration make it California-compliant when properly registered through the NFA process.
Related SBR Options
If you’re considering different SBR configurations, we carry several other quality options. The Honey Badger by Q™ – 300 BLK SBR offers excellent performance in a subsonic configuration. For those interested in pistol-caliber carbines, the B&T SPC9 PDW SBR provides 9mm reliability in a compact package. And if you want maximum compactness in 300 Blackout, check out the Q Minifix SBR – 300 Blackout.
Built for Performance
Every component on the Colt M4 Commando CR6933 serves a purpose. The 1:7 twist barrel handles everything from lightweight training rounds to heavy 77-grain match ammunition. The closed bolt system provides consistent lockup and improved accuracy over open-bolt designs. At 6 pounds 3 ounces, this SBR feels substantial without being burdensome—the weight is distributed where it counts for controlled shooting. The matte black finish resists corrosion while maintaining a low-profile appearance. This is a working rifle, not a safe queen, and it shows in every detail from the reinforced receiver to the properly staked gas key.
The 27.5-inch collapsed length makes this SBR exceptionally maneuverable in tight spaces, while extending the stock to 30.75 inches provides a solid cheek weld for precision work. The 1/2×28 thread pitch accepts standard muzzle devices, though many owners opt for a quality muzzle brake or flash hider to manage the increased blast signature common to shorter barrels. Whether you’re navigating structures or working from a vehicle, the Colt M4 Commando CR6933 delivers the performance you expect from the name on the receiver.
NFA-Regulated Firearm — ATF Form 4 Required
This is a short-barreled rifle (SBR) regulated under the National Firearms Act. Purchase requires an ATF Form 4 transfer, a $200 federal tax stamp, and approximately 30–120 days of ATF processing (eForm 4 is typically faster than paper). The firearm ships to a licensed FFL/SOT dealer of your choice; you take possession only after ATF approval.
SBRs are currently legal to own in most U.S. states. They remain prohibited or restricted for civilian possession in California, New York, New Jersey, Washington D.C., Hawaii, Iowa, Rhode Island, and Washington State. Check your state and local law before ordering. By placing an order you affirm that possession is lawful in your jurisdiction and that you are 21+ with no prohibiting factors under 18 U.S.C. §922(g).
Questions about Form 4, trust setup, or SOT transfer? Contact us before you order — we’ll walk you through it.
Frequently Asked Questions
What is the NFA transfer process for this SBR?
This Colt SBR requires a Form 4 transfer through your local FFL. You'll need to submit fingerprints, passport photos, and the $200 tax stamp payment. We handle the paperwork from our end once you select your receiving dealer.
How long does the NFA approval typically take?
Current ATF processing times for Form 4 transfers average 6-9 months for individual applications. Trust applications often process faster. We provide status updates throughout the waiting period.
Do you ship directly to California FFLs?
Yes, we ship all NFA items directly to your chosen California FFL dealer. The receiving FFL must have an active SOT to accept NFA firearms. We coordinate the transfer paperwork between both dealers.
Why choose 5.56mm in an 11.5-inch SBR?
The 11.5-inch barrel maintains effective velocity for 5.56mm ammunition while providing maximum maneuverability. This length balances ballistic performance with compact size, making it ideal for close-quarters use while still effective at intermediate distances.
Mike R. (verified owner) –
This Colt runs flawlessly. The 11.5-inch barrel is perfect for my truck gun setup. Balance is excellent, and it eats every type of ammo I’ve tried. Worth the wait for the Form 4.
Sarah K. (verified owner) –
Solid build quality as expected from Colt. The shorter length makes storage much easier in my California-compliant safe. Only wish it came with iron sights, but that’s an easy fix.
James L. (verified owner) –
After comparing several SBRs, the Colt’s reliability won me over. The gas system is perfectly tuned—no over-gassing issues like some shorter ARs. My go-to for training classes.