super modular rails are top tier for handguards but my anti rotation tabs needed a few passes with a file to seat flat against an aero upper. once filed in, lockup is rock solid and the rail runs true. lightweight relative to surface area




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Geissele
Overview
The Geissele Automatics MK16 15" Super Modular Rail is designed for the AR-15 platform, featuring a robust aluminum construction with a hardcoat anodized finish that offers durability and resistance to wear. With an M-LOK mounting interface, this handguard allows for easy attachment of accessories, providing versatility for customization. It is particularly suited for builds with a rifle gas system and is commonly found in .223 Wylde caliber setups, making it an excellent choice for precision shooting and tactical use.
Based on build data

Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black
Gas Block
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length
Gas Tube
Wilson Combat Ar-15 Billet Upper Receiver
Upper Receiver
BLEM PSA AR15 Complete Classic Stealth Lower, Black
Lower Receiver
Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4
Upper ReceiverAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Wilson Combat Ar-15 Lo-Profile Gas Block .750" Black | Gas Block | 138 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 136 |
| Wmd Guns Ar-15 Gas Tube Nitromet Mid-Length | Gas Tube | 126 |
| Wilson Combat Ar-15 Billet Upper Receiver | Upper Receiver | 120 |
| BLEM PSA AR15 Complete Classic Stealth Lower, Black | Lower Receiver | 109 |
| Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4 | Upper Receiver | 91 |
| Platform | Percentage |
|---|---|
| AR-15 | 87.8% |
| AR-10 | 9.3% |
| AR-9 | 3% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 64.7% |
| .223 Wylde | 14.6% |
| 300 Blackout | 7.6% |
| .308 Win | 3.9% |
| .450 Bushmaster | 1.8% |
| 6mm ARC | 1.6% |
| 9mm | 1.5% |
| 6.5 Grendel | 1% |
| .458 SOCOM | 0.9% |
| 7.62x39mm | 0.8% |
| .223 Remington | 0.4% |
| .350 Legend | 0.3% |
| .204 Ruger | 0.2% |
| 6.8 SPC II | 0.2% |
| 7.62x51 NATO | 0.2% |
| 6.5 Creedmoor | 0.1% |
| 8.6 Blackout | 0.1% |
| .22 ARC | 0.1% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 43.7% |
| Carbine | 27.7% |
| Rifle | 16.7% |
| Pistol | 10.7% |
| Blowback | 1% |
| Proprietary | 0.2% |
| Intermediate | 0.1% |
Builds in the community that include the Geissele Automatics Llc Mk16 15" Super Modular Rail M-Lok Black
| Build | Parts | Total |
|---|---|---|
![]() | 14 | $1995.86 |
![]() | 9 | $3906.68 |
![]() | 14 | $2891.80 |
![]() | 12 | $1214.74 |
![]() | 21 | $2727.11 |
1 global rating
super modular rails are top tier for handguards but my anti rotation tabs needed a few passes with a file to seat flat against an aero upper. once filed in, lockup is rock solid and the rail runs true. lightweight relative to surface area