Product Overview
- Semi-automatic AR-15 platform short barreled rifle chambered in 5.56 NATO / .223 Remington with an 11.5" chrome-lined barrel.
- Free-float monolithic upper receiver with M4 Government Profile barrel; Mil-Spec trigger and Colt M4 Mil-Spec telescoping buttstock.
- Flip-up front sight and Magpul MBUS flip-up rear sight included.
- NFA item — requires ATF Form 4 tax stamp approval prior to transfer.
- Must ship to a Federal Firearms License (FFL) holder.
Overview
The Colt M4 Mono CQB SBR is a semi-automatic short barreled rifle chambered in 5.56 NATO / .223 Remington, featuring an 11.5" chrome-lined M4 Government Profile barrel housed in a free-float monolithic upper receiver. Built on the AR-15 platform with forged aluminum receivers and a matte black finish, overall length adjusts from 27.5" to 30.75" via the Mil-Spec telescoping buttstock.
This firearm is regulated under the National Firearms Act as a Short Barreled Rifle and requires ATF approval before transfer.
Key Features
- 11.5" chrome-lined M4 Government Profile barrel — chrome lining provides corrosion resistance and ease of cleaning.
- Free-float monolithic upper receiver eliminates the need for a separate handguard and provides a continuous rail interface.
- 5.56 NATO / .223 Remington chambering with 30+1 capacity.
- 1:7" twist rate stabilizes a wide range of bullet weights.
- Mil-Spec trigger and Colt M4 Mil-Spec telescoping buttstock.
- Ambidextrous safety selector; A2 flash hider at the muzzle.
- Flip-up front sight and Magpul MBUS flip-up rear sight included.
FFL & Compliance
This firearm must ship to a Federal Firearms License (FFL) holder; we ship only to the FFL selected during checkout. This is an NFA-regulated Short Barreled Rifle — ATF approval and applicable tax stamp are required before transfer. Buyers are responsible for knowing and complying with all applicable local, state, and federal laws. Magnum Ballistics does not provide legal advice or determine buyer eligibility.
