Black Rain Ordnance 5.56 NATO Left Hand Bolt Carrier Group - Biohazard Engraved
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Black Rain Ordnance
Overview
The Black Rain Ordnance 5.56 NATO Left Hand Bolt Carrier Group is specifically designed for AR-15 platforms, providing reliable cycling and smooth operation for left-handed shooters. Finished with Nickel Boron, this bolt carrier group enhances durability and reduces friction, ensuring consistent performance under various firing conditions. This BCG is commonly found in builds that utilize an intermediate gas system and are chambered in 5.56 NATO, making it a great choice for those seeking a dependable and efficient configuration.
Specifications
Black Rain Ordnance 5.56 NATO Left Hand Bolt Carrier Group - Biohazard Engraved
September 2026 on GunPartPicker
Black Rain Ordnance 5.56 NATO Left Hand Bolt Carrier Group - Biohazard Engraved ranked #108 of the 217 bolt carrier groups builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #80 of the 446 bolt carrier groups builders have added. Builds with this bolt carrier group are nearly all chambered in 5.56 NATO, split between mid-length (50%) and rifle-length (50%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today all 5 retailers we track have it in stock. It dipped to $157.03 at BattleHawk Armory for a stretch in September 2026, well under its usual $186.65 to $194.49, so sales do come around. Buying today, the lowest price is $176.80 at BattleHawk Armory, above September's low of $157.03, so a better deal may come back.
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Frequently Built With
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Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 1 →Builds in the community that include the Black Rain Ordnance 5.56 Nato Left Hand Bolt Carrier Group - Biohazard Engraved
| Build | Parts | Total |
|---|---|---|
 | 8 | $1238.34 |
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