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Geissele
Overview
The Geissele Automatics MK8 10.5" M-Lok Super Modular Rail is a robust handguard designed specifically for the AR-15 platform. With an overall handguard length of 11 inches, it provides ample space for mounting accessories via the M-LOK interface, enhancing the versatility of your build. Constructed from aluminum, this handguard is lightweight yet durable, making it ideal for a variety of builds, particularly those utilizing a carbine gas system chambered in 5.56 NATO.
Specifications
Geissele Automatics MK8 10.5" M-LOK Super Modular Rail Black
Available Merchants(6)
Prices checked
Price Alert
October 2026 on GunPartPicker
Geissele Automatics MK8 10.5" M-LOK Super Modular Rail Black ranked #25 of the 290 handguards builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #43 of the 885 handguards builders have added. Builds with this handguard are mostly chambered in 5.56 NATO (70%, then .223 Wylde 26%), mostly on carbine-length gas (62%, then mid-length 24%), and nearly all AR-15.
It was hard to find in October 2026, in stock on only 12 of the 28 days we checked, and today only Brownells has it in stock. Buying today, the lowest price is $325 at Brownells, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
Core Series .223 Wylde Chrome-Lined Barrels For AR-15 - Core .223 Wylde 10.5" 1-8 Tapered Carbine Chrome-Line Thread
Wilson Combat AR-15 Billet Upper Receiver
Aero Precision Stripped M4E1 AR-15 Lower Receiver - Special Edition - Freedom
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Aero Precision AR-15 5.56 BCG W/C158 Bolt - Aero Logo - Phosphate
Riflespeed Adjustable Gas Control .750" Diameter RS7519 Model 1.9"
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Geissele Automatics Llc Mk8 10.5" M-Lok Super Modular Rail Black
| Build | Parts | Total |
|---|---|---|
 | 15 | $1523.94 |
 | 11 | $1018.81 |
 | 9 | $984.21 |
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