With the BCM 5.56 NATO Carbine-Length upper receiver, Microbest C158 HPT/MPI 5.56 bolt carrier group and Geissele SSA-E X Lightning Bow trigger.
Updated
About this build
yes
Future Pistol 5.56 NATO Carbine AR-15 Build
With the BCM 5.56 NATO Carbine-Length upper receiver, Microbest C158 HPT/MPI 5.56 bolt carrier group and Geissele SSA-E X Lightning Bow trigger.
Updated
yes
11.5 inch SBR AR-15 Specs
How this build compares to other 11.5 inch SBR AR-15 builds
From parts picked in GunPartPicker builds · October 2026
The Geissele SSA-E X Lightning Bow is the #1 trigger in 11.5 inch SBR AR-15 builds on GunPartPicker, picked in about 1 in 4 of them. The Geissele SSA-E X Lightning Bow and B5 Systems Type 22 P-Grip together show up in 1% of 11.5 inch SBR AR-15 builds. 1% of 11.5 inch SBR AR-15 builds share at least 3 parts with this one.
- TriggerCompare with runner upGeissele SSA-E X Lightning Bow#1 · 24%Runner up: Geissele SSA X Lightning Bow9%
- Buffer Tube Assembly
- Pistol GripCompare with top pickB5 Systems Type 22 P-Grip#2 · 9%Top pick: Magpul MOE K2 Grip Polymer Gray11%
Often replaces the B5 Systems Type 22 P-Grip
- Charging HandleCompare with top pickGeissele / Super#10 · 2%Top pick: Radian Raptor & Talon Safety Selector15%
Often replaces the Geissele / Super
- Upper ReceiverCompare with top pickBCM 5.56 NATO Carbine-Length#14 · 1%Top pick: Daniel Defense 11.5" 5.56 NATO 1:710%
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See popular 11.5 inch SBR AR-15 builds11.5 inch SBR AR-15 Parts List(20 parts)
Other Builds Using These Parts
Browse all builds →Community builds that share parts with this one — compare specs and pricing
| Build | Shared | Total |
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| Blacked out, upgraded | 5 parts | $2299.12 |
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