anyone making odd sized a2 front sights?

[st8kfinger]

Anyone know of any companys making oddball sized fixed front sights for ar15's or if i can have a .650 front sight bored out to .740 without strength issues? The reason I'm asking is I want to make a colt 6920 into a non hibilly rigged mock dissipator and the barrel is .740 ish at the rifle length position and I have searched the internet for a .740 front sigh with no luck. After buying a mid length rifle i do not care to own a carbine length and I have been eyeballing dissipators because I want to stick with the fixed front sight so i figured i would make one out of my 6920 because I cannot sell it for enough to build a palametto rifle.

 

[NyleRN]

Tell us exactly what you want. Barrel, gas system length, and type of gas block and sight. And you do want a dizzy set up? Is that correct? Your post is very confusing. You wont find an A2 post sight in .740. They're .750.

 

[st8kfinger]

Tell us exactly what you want. Barrel, gas system length, and type of gas block and sight. And you do want a dizzy set up? Is that correct? Your post is very confusing. You wont find an A2 post sight in .740. They're .750.

I would like to keep the colt a carbine length gas system and cut the existing front sight down making the existing sight a gas block and pinning a new front sight at the rifle length position. Windham makes a barrel like I want but i would rather use my factory colt barrel, that's why I ask if anyone made front sights in oddball sizes or if I could just have a .650 diameter front sight block bored out to the size I needed.

 

[st8kfinger]

Windham Weaponry Online - 16 inch Dissipator M4 Barrel Kit for AR15 / M16
This is what I am trying to do without spending $270

 

[st8kfinger]

DoubleStar A2 Front Sight Gas Block Bayonet Lug AR-15 LR-308 Steel
Could take the .625 diameter fsb to a machine shop and have them bore it to .740 without strength issues?

 

[Slow Hand]

DoubleStar A2 Front Sight Gas Block Bayonet Lug AR-15 LR-308 Steel
Could take the .625 diameter fsb to a machine shop and have them bore it to .740 without strength issues?

Since many FSB's are .750" ID, and I doubt they forge different dimensions, I'm sure boring it to fit your barrel OD would be just fine.

 

[Bsj425]

I think you would possibly have cycling issues. This is why most dissipators are done on h-bar or pencil barrels where the diameter is constant. I have never seen one on a M4 profile.



Eta I see you're taking about for the site not for the actual gas tube. You may be able to bore a standard FSB without issue to get it to work.

 

[Bsj425]

You could probably use a clamp on style and get it to tighten down the extra .01 needed

A2 Fixed Front Sight Clamp-on [w/ Bayonet Lug] | DEZ Tactical Arms

 

[st8kfinger]

You could probably use a clamp on style and get it to tighten down the extra .01 needed

A2 Fixed Front Sight Clamp-on [w/ Bayonet Lug] | DEZ Tactical Arms

I have looked into the clamp on style and it would save me a bunch of money but I'm not sure if they would hold up under heavy use.