Quick Look
The CMMG Banshee 100, introduced in the late 2010s, is a compact AR-style pistol designed for personal defense and close-quarters use. Its modular design prioritizes lightweight handling paired with multi-caliber capability. Currently, it holds a solid niche among AR-style pistol enthusiasts and home-defense shooters.
Why It's a Top Choice
- Compact and lightweight for easy maneuvering.
- Multi-caliber ready with quick barrel swaps.
- Reliable direct impingement gas system.
- Ambidextrous controls for versatile handling.
- Wide aftermarket parts availability.
Key Variants
Banshee 100 MK5
The latest MK5 variant offers updated ergonomics and improved barrel options for tactical applications.
Banshee 100 MK3
An earlier model praised for its compact size and accuracy in pistol configurations.
Competitor Comparison Table
| Feature | Banshee 100 | Sig MCX Rattler | CZ Scorpion EVO 1 |
|---|---|---|---|
| MSRP | $1,100 | $1,500 | $900 |
| Capacity/Size | 10+1 to 30+1 (varies by magazine) | 20+1 | 20+1 |
| Weight | 4.6 lbs | 5.9 lbs | 5.7 lbs |
| Optics-ready | Yes, Picatinny rail | Yes, integrated mount | Yes, Picatinny rail |
| Trigger Type | Single-stage flat trigger | Two-stage Geissele | Single-stage stock |
| Notable Pro | Excellent modularity | Highly compact design | Lightweight and reliable |
| Notable Con | Smaller barrel length options | Higher MSRP | Less caliber options |
Best Use Cases
- Home and personal defense in confined spaces.
- Law enforcement duty backup option.
- Close-quarters training and competition.
- Collection for modular AR pistol enthusiasts.
- Range practice with multi-caliber capability.
FAQs
Can I use rifle magazines in the Banshee 100?
The Banshee 100 uses pistol magazines compatible with AR-style pistols, not full-size rifle magazines.
What is the barrel length of the Banshee 100?
The standard barrel length is 10.5 inches, optimized for compactness and reliability.
How does the multi-caliber system work on the Banshee 100?
It features quick-change barrel and bolt carrier groups to switch between calibers like 5.56 NATO and .300 Blackout.







