Upgrade your AK-47 platform with the MSR Bolt Carrier Assembly featuring an integrated gas piston, engineered for reliable semi-automatic operation in both 7.62x39mm and 5.56x45mm calibers on standard long-stroke systems. This precision Bulgarian-made component from Arsenal delivers consistent cycling and enhanced durability for tactical and sporting applications.
Key Features
- Caliber Compatibility: Designed to function seamlessly with both 7.62x39mm and 5.56x45mm ammunition in semi-auto AK-47 rifles
- Gas Piston Integration: Factory-assembled piston system promotes cleaner operation by directing gas away from the bolt carrier group
- Standard System Fit: Optimized for long-stroke mil-spec AK platforms including stamped and milled receivers
- OEM Quality Construction: Manufactured from high-strength steel with a durable black oxide or chrome finish for corrosion resistance
- Easy Installation: Drop-in replacement that requires no modifications for compatible firearms
Benefits for Shooters
This assembly addresses common pain points such as inconsistent cycling, excessive fouling, and part wear in high-round-count scenarios. The integrated piston design helps maintain reliable function across varying ammunition types while reducing maintenance needs. Whether for range use, competition, or defensive preparedness, it ensures smooth semi-auto performance without the need for frequent adjustments.
Specifications
- Weight: 13 oz
- Dimensions: 14″ L x 1″ W x 1.5″ H
- SKU: 35104
- Material: Steel
- Finish: Protective coating
- Compatibility: Semi-auto standard system AK-47 rifles in 7.62x39mm and 5.56x45mm
Why Choose This Product
Built to exacting Arsenal standards, this bolt carrier assembly provides a direct path to improved reliability and longevity. Its dual-caliber versatility makes it an ideal choice for shooters who value adaptability without compromising on quality or performance.
FAQs
Is this bolt carrier assembly compatible with all AK-47 variants?
It is specifically designed for standard (long) system semi-automatic AK-47 rifles chambered in 7.62x39mm or 5.56x45mm. Always verify fitment with your specific model and receiver type before installation.
Does the gas piston reduce cleaning requirements?
Yes, the integrated gas piston system directs propellant gases away from critical components, helping to minimize carbon buildup compared to traditional designs and supporting easier maintenance.
Can this be used in full-auto firearms?
No, this assembly is intended exclusively for semi-automatic operation and standard system configurations.

