The ATI Milsport .300 Blackout Pistol (part no. ATIG15MS300ML7TB) is a compact AR pistol built around an 8.5-inch barrel and a 7-inch M-LOK handguard, giving shooters a lightweight, accessory-ready platform for home defense or range use. It ships complete with flip-up front and rear sights and a rear arm brace, so there’s no need to source additional parts before it’s ready to run.

Key Specifications

• Chambered in .300 AAC Blackout for flexible supersonic and subsonic performance.
• Features an 8.5-inch barrel for a compact, fast-handling profile.
• Fitted with a 7-inch M-LOK handguard for accessory mounting.
• Ships with a 30-round magazine for 30+1 total capacity.
• Includes flip-up front and rear sights for immediate iron-sight use.
• Equipped with a rear arm brace for stable one-handed or braced shooting.
• Ships with one magazine included.

Frequently Asked Questions

What caliber is the ATI Milsport chambered in? .300 AAC Blackout.

Does it come with sights? Yes, flip-up front and rear sights are included.

What brace does it use? A rear arm brace.

Buy the ATI Milsport .300 Blackout Pistol

Complete and ready to run out of the box, the American Tactical / ATI Milsport stands out in our AR pistols lineup. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.