The ATI Milsport .300 Blackout pistol (brand part no. ATIG15MS300ML7B) pairs an 8.5-inch barrel with a billet aluminum lower receiver for a lightweight, durable AR pistol built for the range, field, or truck. American Tactical / ATI cuts a 1-in-7 twist into the barrel to stabilize a wide range of .300 Blackout loads, wraps it in a 7-inch free-float M-LOK handguard, and machines the flat-top upper receiver optics-ready with a full-length Picatinny rail. A rear blade brace and one 30-round magazine round out the package. Among the pistol-caliber carbines in our AR pistols lineup, the Milsport is built as a versatile pistol for home defense or the range.

Key Specifications

• Chambered in .300 AAC Blackout for both supersonic and subsonic loads.
• The 8.5-inch barrel keeps the platform compact and maneuverable.
• A 1-in-7 twist rate stabilizes a wide range of .300 Blackout bullet weights.
• Ships with a 30-round magazine.
• Runs a semi-automatic action for quick, reliable follow-up shots.
• Built on a billet aluminum lower receiver for a lightweight, durable frame.
• The flat-top upper receiver is optics-ready with a full-length Picatinny rail.
• The 7-inch free-float M-LOK handguard provides mounting space for lights and grips.
• A rear blade brace stabilizes the pistol for one-handed or braced shooting.
• The thumb safety selector gives a familiar, deliberate control.

Frequently Asked Questions

Is this pistol optics-ready? Yes, the flat-top upper has a full-length Picatinny rail ready for a red dot or scope.

How many rounds does the included magazine hold? One 30-round magazine ships with the pistol.

What is the lower receiver made from? A billet aluminum lower receiver keeps the pistol lightweight and durable.

Buy the ATI Milsport .300 Blackout Pistol

A billet lower, an optics-ready upper, and a free-float M-LOK handguard make this Milsport a versatile .300 Blackout pistol for range or field. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.