[ARCHIVED THREAD] - Changing the front sight block

Posted: 5/1/2012 3:12:40 PM EDT

I have a M4 that I`m thinking about changing out the FSB. Looking for opinions here. I`ve heard if its not done right accuracy could be off. True?

Posted: 5/1/2012 3:29:03 PM EDT

[#1]

If the fsb gets changed to a lo-pro gas block accruacy would not be affected but function could be if not aligned properly.

This being said, this is not a hard modification.

Posted: 5/1/2012 3:32:03 PM EDT

[#2]

I want to change my M4`s neutered fsb to the same with the bayonet lug, so the dimensions will be the same

Posted: 5/1/2012 3:40:59 PM EDT

[#3]

That's a little different. The drilling and pinning of a standard fsb is unique to each block and barrel. The chances of a replacements holes lining up with your barrels present slots
is slim at best.

ADCO can do this type of gunsmithing but it does come with a price, $$$. There are clamp ons available if this is an option for you.

Posted: 5/1/2012 3:47:29 PM EDT

[#4]

I`ve heard of them.... Don`t mind spending, but can ADCO do it prefect?

Posted: 5/1/2012 3:50:31 PM EDT

[#5]

The clamp-ons don't have a bayo lug.
ADCO.

Posted: 5/1/2012 3:51:14 PM EDT

[#6]

Yea, they're that good.

Posted: 5/1/2012 3:51:35 PM EDT

[#7]

Quoted:
I`ve heard of them.... Don`t mind spending, but can ADCO do it prefect?

Yes no worries

Just my opinion but it seems like a waste of money.

Posted: 5/1/2012 4:38:13 PM EDT

[#8]

Call me a perfectionist

How bout two other services that they offer,

1. Colt screw pivot to detent style

2. Colt sear block removal

How do they go about doing them?

[ARCHIVED THREAD] - Changing the front sight block

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[ARCHIVED THREAD] - Changing the front sight block

[ARCHIVED THREAD] - Changing the front sight block