The Colt EPR II 5.56 SBR with MBUS 3 sights is the standard-trim, 11.5-inch version of Colt’s Enhanced Patrol Rifle II (Colt part no. LE6933-EPRII). Colt calls the EPR II the next evolution of its carbine platform, built from proven TDP components with certified MIL-SPEC materials, coatings, finishes and proprietary processes. The new Colt free-float rail gives M-LOK slots in seven orientations, a full-length Picatinny top rail and two integrated steel QD sling sockets. An ambidextrous safety selector, an enhanced trigger guard, Magpul MBUS 3 folding sights and a Magpul MOE SL buttstock round it out. It ships with a 30-round magazine and is built suppressor-ready.

Key Specifications

• The chambering is 5.56 NATO, the standard M4-pattern cartridge.
• Barrel length is 11.5 inches, chrome lined and short enough for close quarters.
• Magazine capacity is 30 rounds, the AR-15 standard.
• Sights are Magpul MBUS 3 folding sights, which fold away under an optic.
• The safety selector is ambidextrous for either-hand operation.
• The rail is Colt’s free-float M-LOK design with seven mounting orientations and a full-length Picatinny top rail.
• Sling attachment uses two integrated steel QD sockets, with anti-rotation tabs locking the rail in place.
• The buttstock is a Magpul MOE SL with an enhanced trigger guard below the receiver.

Frequently Asked Questions

What sights come on it? Magpul MBUS 3 folding sights, which work as primary irons or fold down as backups under an optic.

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.

Can I mount a suppressor? Yes. Colt describes the EPR II models as suppressor-ready.

Buy the Colt EPR II 5.56 SBR with MBUS 3 Sights

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.