Geissele Automatics MK8 10.5" M-LOK Super Modular Rail Black
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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
August 2026 on GunPartPicker
Geissele Automatics MK8 10.5" M-LOK Super Modular Rail Black ranked #28 of the 243 handguards builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #62 of the 683 handguards builders have added. Builds with this handguard are mostly chambered in 5.56 NATO (71%, then .223 Wylde 29%), split between carbine-length (57%) and mid-length (29%) gas systems, and mostly AR-15 (78%, then AR-10 22%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 4 of the 6 retailers we track have it in stock. It dipped to $244.44 at Brownells for a stretch in August 2026, well under its usual $325, so sales do come around. Buying today, the lowest price is $274.62 at KY Gun Company, above August's low of $244.44, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 19 builds that include this one
Sons of Liberty Gun Works Combat V2 Barrel 5.56x45mm 11.50", Black - Enhanced Accuracy - 11.5COMBATV2-CHF-5.56
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
Geissele Automatics Reliability Enhancement KIT H3
Geissele Automatics Sgb Geissele Super Gas Block, Black
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with 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 3 →Builds in the community that include the Geissele Automatics Llc Mk8 10.5" M-Lok Super Modular Rail Black
| Build | Parts | Total |
|---|---|---|
 | 15 | $1478.56 |
 | 11 | $957.18 |
 | 9 | $882.02 |
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