Description

MAC 1911-9 Double Stack – 9MM 4.25" RMR-Ready Tactical Pistol

American Engineering Meets Tactical Innovation – Designed in Tennessee, Built for Any Mission.

The MAC 1911-9 Double Stack is the next evolution of fighting pistols from Military Armament Corporation, designed in Knoxville, TN and precision-built by Tisas. This full-featured 9MM powerhouse is ready for duty, defense, or dynamic competition – equipped with premium upgrades like an RMR optic-ready slide cut, M1913 light rail, and a forged steel frame</strong.

At the core is a match-grade 4.25" bull barrel with QPQ Tenifer treatment and an 11º target crown, ensuring optimal accuracy and recoil control. The polymer grip module offers aggressive 25LPI checkering on the front and rear, plus a removable aluminum magwell for faster reloads. An ideal platform for optics and weapon lights, this pistol is mission-ready right out of the box.

Notable Features

RMR Pattern Optic Cut – Factory Milled
4.25" Bull Barrel – QPQ Tenifer Finish with 11º Crown
Forged 4140 Carbon Steel Frame & Slide
Lightweight Reinforced Polymer Grip Module with 25LPI Checkering
Compatible with Tisas DS and STI® 2011 Magazines
Ambidextrous Thumb Safety & Grip Safety
M1913 Picatinny Rail – Weapon Light Ready
Fiber Optic Front Sight, Serrated Black Rear
4.75 lb Skeletonized Trigger
Two 17-Round OEM Checkmate Magazines Included

What's in the Box

MAC 1911-9 DS Pistol
2 x 17-Round Magazines
Lockable Hard Case
Cleaning Kit
Bushing Wrench
Trigger Lock
Instruction Manual

Specifications

Caliber: 9MM
Barrel Length: 4.25" – 1:10 RH Twist, Button Rifled
Barrel Material: 4140 Forged, Hard Chrome Finish
Frame/Slide Material: Forged 4140 Carbon Steel
Frame Finish: Cerakote Black (H-146)
Slide Finish: QPQ Tenifer
Grip Module: Reinforced Polymer, Glass-Filled
Trigger: Skeletonized, 4.75 lb Pull
Length: 7.9"
Height: 5.77"
Weight: 30 oz (Unloaded)
Action: Single Action
Safety: Ambi Thumb & Grip Safety
Optic Ready: Yes – RMR Footprint
Optic Mount Thread: 6/32 TPI
Magazine: 17-Round OEM Checkmate (2 Included)

Optics Mounting Information

Footprint: RMR (Trijicon Pattern)
Mount Thread Spec: 6/32 TPI
Recommended Torque: 10.2–11.9 in-lb
Rear Sight: Glock Dovetail (on Plate), Tisas Dovetail Cut Slide
Use with: Blue Thread Locker (71 in-lb breakaway rating)

⚠️ California Proposition 65 Warning

This product can expose you to Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Important Tax Notice for California Customers

All firearms, ammunition, and firearm precursor parts sold to California addresses are subject to an 11% California Firearms Excise Tax (CFET) in addition to the standard 7.75% sales tax. This tax will be automatically applied at checkout. CFET does not apply to exempt customers (eg. LEO or free state purchases from outside California).

If you are exempt from CA FET (e.g., active/retired law enforcement, military, or other qualifying individuals), please contact us at sales@terrangearusa.com and complete this CDTFA form before placing your order to verify your exempt status.