Bolt extractor spring and o ring upgrade confusion

[Loner]

Okay, Grant has the Crane HD extractor sprng and o ring upgrade for $3 right?

Buffertech has an extractor upgrade kit which comes with an improved spring, plunger and o ring for $12.95 http://www.buffertech.com/stores/1/The_Extractor_Upgrade_Kit_P33C12.cfm

CMMG has an egress bolt upgrade kit that comes with a cs extractor and ejector springs, single coil gas ring. E ring and milspec black insert for $29.95 http://cmmginc.secure-mall.com/shop/index.php?shop=1&cat=11

So aside from the huge price differences are they the same? I understand cmmg's egress kit would cost more as they come with the cs ejector spring and 1 pc gas ring, but what about the rest?

[C4IGrant]

Okay, Grant has the Crane HD extractor sprng and o ring upgrade for $3 right?

Buffertech has an extractor upgrade kit which comes with an improved spring, plunger and o ring for $12.95 http://www.buffertech.com/stores/1/The_Extractor_Upgrade_Kit_P33C12.cfm

CMMG has an egress bolt upgrade kit that comes with a cs extractor and ejector springs, single coil gas ring. E ring and milspec black insert for $29.95 http://cmmginc.secure-mall.com/shop/index.php?shop=1&cat=11

So aside from the huge price differences are they the same? I understand cmmg's egress kit would cost more as they come with the cs ejector spring and 1 pc gas ring, but what about the rest?

Read this: https://www.m4carbine.net/showthread.php?p=34390#post34390

My kit includes a black insert, CS extractor spring and a Crane O-Ring (direct from the factory where Crane buys theirs). I also offer the McFarland single piece gas ring.

The prices that others charge seem VERY high, but if they can get it, more power to them!


C4

[VA_Dinger]

I purchased a CMMG E.G.R.E.S.S. Kit a few years ago. At the time it was the only complete kit available but I would never pay that much now that we have better quality & cheaper options available.

FYI - The E.G.R.E.S.S. kit does not come with a true Defender. It comes with a knock-off, even though it worked fine for $30 you would think they could afford the real deal.

IMO – Buy the G&R kit, it has everything you need and it's a way better deal.