carrier is well machined, lockup is positive on a colt bolt. extractor spring out of the box was a bit weaker than i prefer for 77gr ammo, swapped in a sprinco crush washer extractor upgrade and ejection moved from 5 oclock to 4. otherwise solid




Click to see full view
SureFire
Overview
The SureFire Optimized AR-15 Bolt Carrier Group is designed specifically for 5.56 NATO caliber firearms, featuring a custom bolt carrier that enhances performance and reliability. This bolt carrier group is engineered to work seamlessly with various gas systems, particularly in pistol configurations, ensuring consistent cycling and function. Builders often incorporate this component into builds that prioritize compactness and maneuverability, making it a popular choice for short-barreled rifles and pistols.
Based on build data

Bravo Company Manufacturing Mk2 Recoil Mitigation System - Mod 1 - T2

Franklin Armory 2012 BFS Marked Stripped Lower Receiver

Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2

Franklin Armory BFSIII CZ-S1 Binary Trigger - 06-50026-BLK

Forward Controls Design Llc Ar-15 Enhanced Extended Mag Release Serrated Ambidextrous

Geissele Automatics Llc Ar-15 Ultra Precision 5 Axis Trigger Guard Black
Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Bravo Company Manufacturing Mk2 Recoil Mitigation System - Mod 1 - T2 | 7 | |
| Franklin Armory 2012 BFS Marked Stripped Lower Receiver | 6 | |
| Phase 5 Version 2 Extended Bolt Release, 2.15" - EBRV2 | 5 | |
| Franklin Armory BFSIII CZ-S1 Binary Trigger - 06-50026-BLK | 5 | |
| Forward Controls Design Llc Ar-15 Enhanced Extended Mag Release Serrated Ambidextrous | 4 | |
| Geissele Automatics Llc Ar-15 Ultra Precision 5 Axis Trigger Guard Black | 4 |
| Platform | Percentage |
|---|---|
| AR-15 | 85.7% |
| AR-10 | 14.3% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 85.7% |
| 300 Blackout | 14.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 50% |
| Carbine | 25% |
| Pistol | 25% |
Builds in the community that include the SureFire Optimized Ar-15 Bolt Carrier Group - 5.56 Nato
| Build | Parts | Total |
|---|---|---|
![]() | 10 | $3182.67 |
![]() | 27 | $5770.47 |
![]() | 19 | $5432.26 |
![]() | 36 | $16301.15 |
![]() | 11 | $3033.09 |
1 global rating
carrier is well machined, lockup is positive on a colt bolt. extractor spring out of the box was a bit weaker than i prefer for 77gr ammo, swapped in a sprinco crush washer extractor upgrade and ejection moved from 5 oclock to 4. otherwise solid