R
RelentlessRobxsolid but a few notes
Reviewed on January 19, 2026Verified with Build
works well. install was a bit fiddly
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Colt Carbine H2 Heavy Buffer
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Colt
Overview
The Colt Carbine H2 Heavy Buffer is designed specifically for carbine-length gas systems, providing reliable cycling and improved recoil management. Its H2 weight helps to mitigate the harshness of the bolt carrier group’s movement, allowing for smoother operation during firing. This buffer is commonly found in builds utilizing the 5.56 NATO caliber, making it a suitable choice for builders looking to enhance performance in their carbine platform.
Specifications
MPNSP65068
TypeCarbine
Buffer WeightH
Frequently Built With
Based on build data
Expo Arms Ar-15 Carbine Buffer Spring - 17-7 Steel
Buffer Spring
Strike Industries Extended Bolt Catch
Bolt Catch
CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B
Takedown Pin
Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom
Lower Receiver
Strike Industries Cobra Billet Aluminum Trigger Guard - Red
Trigger Guard
Rise Armament Ar-15 Magazine Release Button - Rise Red
Magazine ReleaseBuild 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.
75%
AR-1575%
AR-1025%
CaliberBased on real build data showing which calibers builders choose alongside this product.
94.1%
5.56 NATO94.1%
.223 Wylde5.9%
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
78.6%
Carbine78.6%
Mid-Length14.3%
Rifle7.1%
| Product | Category | Times Built Together |
|---|---|---|
| Expo Arms Ar-15 Carbine Buffer Spring - 17-7 Steel | Buffer Spring | 10 |
| Strike Industries Extended Bolt Catch | Bolt Catch | 9 |
| CMMG AR-15 HD Pivot and Takedown Pin Parts Kit - 55AFF3B | Takedown Pin | 8 |
| Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom | Lower Receiver | 7 |
| Strike Industries Cobra Billet Aluminum Trigger Guard - Red | Trigger Guard | 6 |
| Rise Armament Ar-15 Magazine Release Button - Rise Red | Magazine Release | 6 |
| Platform | Percentage |
|---|---|
| AR-15 | 75% |
| AR-10 | 25% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 94.1% |
| .223 Wylde | 5.9% |
| Gas System | Percentage |
|---|---|
| Carbine | 78.6% |
| Mid-Length | 14.3% |
| Rifle | 7.1% |
Builds Featuring This Part
See all 7 →Builds in the community that include the Colt Carbine H2 Heavy Buffer
| Build | Parts | Total |
|---|---|---|
 | 17 | $1355.30 |
 | 22 | $1192.35 |
 | 14 | $1298.12 |
 | 20 | $1512.89 |
 | 14 | $1112.21 |
 | 18 | $765.25 |
 | 26 | $2952.50 |
Customer reviews
4.0out of 5
1 global rating