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The BCM MK2 Receiver Extension for AR-15 is machined from 7075-T6 aluminum for tough dependability. Compatible with USGI, BCM, Colt, LMT, SOPMOD, VLTOR, Stag Arms, Magpul CTR, and any other MIL-SPEC stock.
Please Note: This buffer tube is not compatible with carbine and rifle buffers. Requires a rifle action spring and BCM MK2 buffer.
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