A comparative look at BCG's....Colt/LMT/BCM

[ucrt]

i dont know what current price is for BCM BCGs, but LMT switched to MIM about the time BCM jacked their prices up to $165/ea... while LMT stayed at $130/ea.

====================================

I see Specialized. Armament sells Colt Gas Keys for $40. If there is any linearity in pricing, this would indicate the MIM parts are a whole lot cheaper, like $40 vs. $5??


But if it cracks when staked...

.

[bkb0000]

====================================

I see Specialized. Armament sells Colt Gas Keys for $40. If there is any linearity in pricing, this would indicate the MIM parts are a whole lot cheaper, like $40 vs. $5??


But if it cracks when staked...

.

its not a "crack," like you think of a crack in cement, it's a split in one spot at the top of the stake where the metal is stretched beyond it's elasticity. if my wife hadn't run off with my camera on vacation, i'd take a pic and show.

[nowayout]

In this picture the LMT looks shorter than the rest. What is the reason for this?



.

[ALCOAR]

If you look the LMT is slightly elevated above the other two.

[ALCOAR]

Sorry about that guys, apparently my mic was not zero'd for that one previous measurement....he is the new correct pic/measured bcm bolt, and I also edited the previous reply of mine to reflect the correct bcm bolt measurement.



So that's...

Colt: 2.7975"
LMT: 2.7935"
BCM: 2.7960"

[ALCOAR]

LMT F/A BCG broken down view....including inside the carrier:

[Creepinbeetle]

Man!...this thread just drips with awesomeness.

While I've been passively(sp?) trying to break/wear out my commercial BCG this thread has paved the way for my next BCG.


Thanks OP!

[ALCOAR]

No problem..appreciate the kind words

Stay tuned for the BCM and Colt broken down & inside the carrier pics.

[sanman96825]

Trident:
My 6721 bcg does not look like the one in your OP photo.

Mind if I post a pic of it (taken from another thread) so you can tell me what the differences are (another member said that my style bcg was the least desirable) and what, if anything, should be changed? I asked a question about it in the other thread but no one answered it.

Thanks

[ZRH]

Trident:
My 6721 bcg does not look like the one in your OP photo.

Mind if I post a pic of it (taken from another thread) so you can tell me what the differences are (another member said that my style bcg was the least desirable) and what, if anything, should be changed? I asked a question about it in the other thread but no one answered it.

Thanks

Yours is half moon with no firing pin shroud. Regular (M16) carriers are full circle at the rear and there is a metal shroud around the firing pin. Difference is that the actual firing pin in yours pushes the hammer back instead of the carrier pushing the hammer back (into the cocked position).

No one probably answered because it is obvious from looking at it what the difference is.