J
jebstewart11no complaints
Reviewed on April 18, 2026Verified with Build
QD socket holds tight
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Bravo Company Manufacturing MK2 Receiver Extension
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Bravo Company
Overview
The Bravo Company Manufacturing Mk2 Receiver Extension is a Mil-Spec carbine buffer tube made from durable 7075-T6 aluminum, designed to withstand the rigors of heavy use. This tube only assembly provides a reliable foundation for your buffer system, ensuring optimal performance in your AR-15 build. It is commonly found in builds featuring a Mid-Length gas system chambered in 5.56 NATO, making it a versatile choice for various shooting applications.
Specifications
MPNBCM-MK2-RE
Material7075-T6 Aluminum
ColorBlack
AssemblyTube Only
Buffer Tube TypeCarbine
Buffer Tube SpecMil-Spec
August 2026 on GunPartPicker
Bravo Company Manufacturing MK2 Receiver Extension was the fourth most added buffer tube on GunPartPicker in August 2026, behind the Strike Industries Carbine Length Pistol Buffer Tube - Red, with about 6% of all buffer tubes added to builds. That's its 4th straight month at #4. Builds with this buffer tube are mostly chambered in 5.56 NATO (63%, then .223 Wylde 25%), split between mid-length (50%) and intermediate (17%) gas systems, and mostly AR-15 (88%, then AR-10 13%).
Availability is good: it was in stock at one retailer or another nearly every day in August 2026, and today 8 of the 9 retailers we track have it in stock. Prices barely moved in August 2026, holding around $49.95, so there haven't been real sales lately. Buying today, the lowest price is $49.95 at Brownells, which matches the best price we saw in August.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
Not sure which buffer tube to pick?
We ranked every buffer tube by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Tube Guide →Frequently Built With
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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.
87.5%
AR-1587.5%
AR-1012.5%
CaliberBased on real build data showing which calibers builders choose alongside this product.
62.5%
5.56 NATO62.5%
.223 Wylde25%
300 Blackout12.5%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
50%
Mid-Length50%
Intermediate16.7%
Pistol16.7%
Rifle16.7%
Builds Featuring This Part
See all 16 →Builds in the community that include the Bravo Company Manufacturing Mk2 Receiver Extension
| Build | Parts | Total |
|---|---|---|
 | 23 | $2433.53 |
 | 28 | $3579.54 |
 | 29 | $3874.31 |
 | 27 | $3370.48 |
 | 20 | $1660.01 |
 | 27 | $2077.19 |
 | 22 | $1465.77 |
 | 24 | $3093.26 |
 | 33 | $6482.44 |
 | 28 | $3917.43 |
 | 26 | $2312.54 |
 | 28 | $3240.10 |
Customer reviews
4.5out of 5
2 global ratings
Top reviews
D
dusters16_recceBCM Mk2 extension heavier
Reviewed on March 19, 2026Verified with Build
BCM Mk2 receiver extension is comfortable to shoulder but heavier than I expected for the application. Anodize is the matte black BCM uses. Six positions click positively. Threads to a standard milspec castle nut. Quality construction.
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