Colt’s Manufacturing Monolithic Semi-Auto Rifle, 11.5″ Barrel

Product Description

Colt’s Manufacturing Monolithic is a semi-auto 5.56mm rifle with an 11.5″ barrel and a 30-round capacity. It comes in a matte black finish and carries Magpul Mbus sights, so you have iron sights on the rifle from the start.

The 11.5″ barrel makes this a short-barreled rifle. That keeps the overall package compact compared with a full-length carbine. It also means NFA rules apply, so the transfer takes extra paperwork. As an FFL/SOT dealer, Western Sport handles these transfers and can walk you through the process.

Who it suits

This rifle suits shooters who want a short, handy 5.56mm for home defense planning, close-range range work, or a build around a compact platform. It also fits collectors who like Colt rifles and want an SBR in the safe. Because it is semi-auto with a 30-round capacity, it works well for practice sessions and training drills.

Common add-ons include a quality sling, spare magazines for 5.56mm, a red dot or low-power optic, a weapon light, and ear and eye protection. Pick optics and lights with the rifle’s mounting space in mind. A basic cleaning kit and a solid case or rack round out the setup.

Colt's Manufacturing Monolithic Semi-Auto Rifle, 11.5" Barrel Specifications

Ordering from Western Sport

Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: What caliber is the Colt Monolithic 11.5" rifle?

A: 5.56mm. It is a semi-auto carbine fed from a 30-round magazine.

Q: Is the Colt Monolithic 11.5" an SBR?

A: Yes. The 11.5" barrel makes it a short-barreled rifle, so NFA rules apply to the transfer. Western Sport is an FFL/SOT dealer and can help with the process.

Q: What sights come on the Colt Monolithic?

A: Magpul Mbus sights. They give you iron sights on the rifle, and you can add an optic later.

Q: How many rounds does the Colt Monolithic hold?

A: 30 rounds. The action is semi-auto.

Warranty and Manufacturer

Covered by the Colt's Manufacturing factory warranty; warranty terms come from Colt's Manufacturing.

Additional information