The Colt LE6933 SBR is an 11.5-inch, 5.56 NATO short-barreled rifle in black on Colt’s M4-pattern platform (Colt part no. LE6933). Colt builds it on the same platform its armed forces customers have relied on for decades, scaled to the compact 11.5-inch length. The barrel is chrome lined, the bolt is HP/MPI tested, and the rifle runs semi-automatic on direct gas impingement. It feeds from standard 30-round AR-15 magazines and accepts the full range of M4-pattern accessories. For a home-defense rifle, a truck gun or a suppressor host, the LE6933 is a straightforward Colt choice.

Key Specifications

• The chambering is 5.56 NATO, with defensive, training and match ammunition easy to find.
• Barrel length is 11.5 inches, compact for close quarters while keeping useful velocity.
• Magazine capacity is 30 rounds, the standard AR-15 load.
• The finish is black, plain and durable.
• The action is semi-automatic on Colt’s direct gas impingement system.
• The barrel is chrome lined, which resists corrosion and extends service life.
• The bolt is HP/MPI tested, Colt’s high-pressure and magnetic particle inspection.
• The platform is M4 pattern, so most standard AR-15 furniture and accessories fit.
• It accepts standard AR-15 pattern magazines, keeping spares affordable.

Frequently Asked Questions

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for short-barreled rifles. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply. Taking an SBR across state lines still requires an approved ATF Form 5320.20.

What is the magazine capacity? It is set up for 30-round magazines and accepts standard AR-15 pattern magazines.

Buy the Colt LE6933 SBR, 5.56 NATO, 11.5-Inch

As of October 9, 2026, this short-barreled rifle transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Colt‘s short-barreled rifles lineup and our Lubbock, Texas team will handle the transfer.