BCM MK2 Recoil Mitigation System

**Todd.K** · 05-19-22, 19:58

Originally Posted by Wake27

What about the spring looks different?

Just so everyone is clear, I’m talking about the spring inside the buffer. This is the patented feature of both.

The MK2 patent shows a spring that is the full diameter of the inside of the buffer. The A5 uses a smaller spring in a counterbore of the last buffer weight.

The recoil spring used is a standard rifle spring just like the A5. Buffers and receiver extensions should be compatible to mix and match between MK2 and A5.

**Todd.K** · 05-19-22, 20:07

The advantage is another source. Perhaps the larger diameter spring has a longer service life, but I don’t think I’ve ever head of an A5 failure.

**17K** · 05-19-22, 22:11

You can take the spring out of the buffer and it will be more reliable with marginal springs and gi mags.

**Wake27** · 05-19-22, 23:16

Originally Posted by 17K

You can take the spring out of the buffer and it will be more reliable with marginal springs and gi mags.

Done some pre-release testing on BCM’s new product?

Sent from my iPhone using Tapatalk

**grizzlyblake** · 05-20-22, 05:32

Interesting that BCM drops stuff with so little fanfare.

Their redesigned flash comps have been out a while now and I’ve seen essentially no chatter or advertising.

Stick, do you know if they plan to sell this recoil mitigation system on complete lowers anytime soon?

**TMS951** · 05-20-22, 06:59

A larger diameter spring seems like a good cost saving measure if now one of the weights does not need to be drilled. All weights are interchangeable.

Also the literature mentions length of travel of the weights. Maybe they have more travel than an a5 buffer?

Either way I think it’s likely a marginal or nonexistent improvement over the A5 so they could get around vltors patent and make their own a5 buffers.

**rm06** · 05-20-22, 07:06

Originally Posted by grizzlyblake

Interesting that BCM drops stuff with so little fanfare.

Or information. I recently bought a new A5 RE and buffer but was looking at these, I passed as there just isn't much published info about them. And I'm not sure how much recoil mitigation I need using 5.56

**One More Time** · 05-20-22, 07:56

Originally Posted by rm06

Or information. I recently bought a new A5 RE and buffer but was looking at these, I passed as there just isn't much published info about them. And I'm not sure how much recoil mitigation I need using 5.56

I just did the same thing, I was pretty sure it was the same dimensions of an A5 but just went with a regular A5 RE and A5H2.

I already have a drawer of stuff that I either didn't fully read the description or it wasn't what I thought it was.

**markm** · 05-20-22, 09:07

Originally Posted by grizzlyblake

Interesting that BCM drops stuff with so little fanfare.

Their redesigned flash comps have been out a while now and I’ve seen essentially no chatter or advertising.

Yeah. I didn't even know they redid them.