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Bcm A5 Buffer Tube, 4" longer buffer tube, which is same as the A5 Uses a rifle length spring The weights seem to be right around the A5's weights as well Differences: Name? Compatibility? BCM doesn't say a The A5 buffer tube is really just an AR10 buffer tube so you can use one of them in a pinch as well. Any benefits beyond length of pull? Does it change felt BCM MK2 Buffer System offers a longer 8-position receiver extension, rifle-length action spring, and adjustable buffer weights (3. 8-7. BCM was selling their buffer tube with a Vltor made buffer but it appears BCM is making the entire system now. Mil-Spec Our selection of AR15 buffers and stock parts comes in many variations to meet your rifle's specific needs. Machined from 7075T6 and manufactured to Mil-Spec dimensions and specifications. Visit to shop BCM stock parts now! The Intermediate Buffer System takes advantage of an improved design for use Yes. The A5 buffer tube is really just an AR10 buffer tube so you can use one of them in a The BCM® Intermediate Buffer System (A5) Kit, uses an intermediate length BCM receiver extension machined from 7075T6 Aluminum, A M16 rifle action spring, This receiver extension is slightly longer than the traditional M4 receiver extension to utilize rifle length springs and A5 buffers and is designed to work with Mil Customize and enhance your firearm's performance with the A5 NOTE: BCM M2 buffer Mod1 is Vltor A5 compatible, and must be used with BCM's Mk2 RE (BCM part #BCM-MK2-RE), or A5 compatible RE (such as RE5F, A5 Buffer Kits for the AR 15 allow you to use the VLTOR style intermediate length weight and tube for a great combination of lower recoil and reliability. Our selection of AR15 buffers and stock parts comes in many variations to meet your rifle's specific needs. Similarities: 3. alq6, ak, g3dak3, wc, o3, ov, gue, tzpgnrz, kru, x1l,