Rifle
AR-15 Custom Build — 16\" Mid-Length
November 15, 2024
AR-155.56BCMGeisseleMid-Length
A no-compromise mid-length AR-15 build focused on reliability and shootability. BCM upper, Aero lower, Geissele trigger, and a SureFire brake.
Overview
This build started as a search for the perfect duty-weight AR-15. No gimmicks, no weight weenie parts — just a proven, reliable carbine that runs when it needs to.
Parts List
| Component | Part |
| Upper | BCM 16" Mid-Length ELW |
| Lower | Aero Precision M4E1 |
| BCG | BCM Bolt Carrier Group |
| Trigger | Geissele SSA-E |
| Stock | Magpul CTR |
| Grip | Magpul MOE+ |
| Handguard | BCM MCMR 13" |
| Muzzle Device | SureFire SOCOM 4-Prong |
| Optic | Vortex Razor HD Gen III 1-10x |
Build Notes
The Geissele SSA-E was a must. The factory mil-spec trigger was serviceable but the SSA-E transformed the shooting experience — clean 3.5 lb pull with no creep.
BCM uppers just work. The ELW profile keeps weight down while maintaining rigidity. Paired with the BCM BCG this thing has been flawless across 2,000+ rounds without a single malfunction.
Performance
- —Accuracy: Sub-MOA with quality ammo at 100 yards
- —Reliability: 2,100+ rounds, zero malfunctions
- —Weight: 7.2 lbs configured