BCM MK2 Receiver Extension (Buffer Tube) – A5 Compatible
The BCM MK2 Receiver Extension is a 7-position receiver extension tube designed to work with the VLTOR A5 buffer system.
This receiver extension is slightly longer than the traditional M4 receiver extension and is designed to work with Mil-Spec dimensioned M4/AR-15 type collapsible stocks.
The BCM Intermediate Receiver Extension, designed for use with A5 systems, aids in lowering bolt carrier velocity, reduces cyclic rate, and softens felt recoil increasing overall reliability and performance.
This receiver extension tube can also be utilized as a replacement receiver extension for the AR-10 rifle.
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Sean of the D. (verified owner) –
This tube is just as good as the original vltor a5 buffer tube. The a5 buffer system allows your direct impingement system run even though its out of tune, or got dirty. It simply increases its range of operability when things aren’t correct. Has absolutely nothing to do with taming recoil. 5.56 has no real recoil anyhow.