[ARCHIVED THREAD] - Bolt question

Posted: 11/15/2009 3:33:44 PM EDT

I just watched the cleaning section in The Art Of The Tactical Carbine 1. Does anyone know who makes the bolt in Chris Costa's gun with the dual extractor spings? Thanks?

Posted: 11/15/2009 3:45:32 PM EDT

[#1]

No idea what Costa uses but I am pretty sure the LMT enahnced has two springs (I can't confirm that as I have never seen one)

Posted: 11/15/2009 4:37:00 PM EDT

[#2]

The LMT enhanced bolt has a whale tail at the end of the extractor and it has dual springs under there.

Posted: 11/15/2009 4:42:07 PM EDT

[#3]

KAC

Posted: 11/15/2009 6:43:03 PM EDT

[#4]

Quoted:
I just watched the cleaning section in The Art Of The Tactical Carbine 1. Does anyone know who makes the bolt in Chris Costa's gun with the dual extractor spings? Thanks?

It is a Knight's Armament SR-15 E3 rifle. The E3 stands for their enhanced bolt design that has dual extractor springs. E3 bolts are very ($375 IIRC) expensive. You will also need to use an E3 barrel extension.

It would be easier to buy a complete "E3" rifle.

Edit to add: Another obvious design change is the rounded design of the locking lugs. The claimed life of the E3 bolt is around 20K rounds.

[ARCHIVED THREAD] - Bolt question

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[ARCHIVED THREAD] - Bolt question

[ARCHIVED THREAD] - Bolt question