Stupid idea ???

[Pepi]

I've got an older Bushmaster XM-15 and I hate the removable carrying handle sights and the A2 front sight. Do you think it is stupid to cut down the A2 sight gas block and make the XM-15 a flattop? My eyes are getting bad and I would like to have a low profile red dot on the gun. The A2 sight is totally in the way. I know a scope would be OK because I've got an AR like this but this one I don't want a scope on it. I know after market gas blocks are availability but for some reason I see a headache doing one of these.

 

[Magyars]

Go ahead...if it's what you want and have no intention of getting rid of it

 

[MrSmitty]

For the cost, maybe buy another upper? Unless you cut it yourself.

 

[Hookeye]

You could just do a 45 degree mount w a reflex sight.

 

[ACC]

Dont cut it, just replace the gas block

 

[Pepi]

Dont cut it, just replace the gas block

What is a GOOD low profile gas block that won't make me cuss like a sailor?

 

[SnoopLoggyDog]

Remove the carry handle and put the red dot on the rail. With the correct height riser, the dot will co-witness with the front sight. Try it out and see how it looks. If you still don't like it, then just replace the gas block. It is easy to do.

If you need some help, let me know? I am 1.5 hours North of you. If you come to my place, I have a spare gas block we can install.

 

[Hookeye]

I ran a 30mm RDS w the dot sitting right on top of the front sight when zeroed.
Could lift my head slightly causing the dot to float above the front sight post.
"Opened" my view and still hit dead on.
Thought it worked well, and easy to do.
It didn't bother me to stay down and have the dot on top of the front sight.
Both methods were fine with me.

 

[92FSTech]

I've got a Aimpoint PRO mounted to a rifle with a fixed A2-style FSB. It's set up for absolute co-witness, and I don't even notice the front sight when I'm using the dot. It's not been a problem.

 

[BigMoose]

Or just sell that, and buy this?

$625.00

PANTHER ARMS DPMS A-15 - D35091

Firearms for the Finest Collectors

simpsonltd.com

 

[printcraft]

 

[SnoopLoggyDog]

 

[Onebad06vtx]

I did one myself long ago.
Turned out great but for what you can buy a flat top and gas block for,it isnt worth my time anymore.

 

[VinceU1]

OK, the YHM Front Flip Sight have gotten expensive beyond belief, but they put a front sight you can push down out of the way of a RDS on your gun.

 

[Jarvitron]

I bubbaed one off with a cutoff wheel and some cold blue and it came out okay. The main problem with add on gas blocks is the scallops for the pins interfere/alter where the set screws land sometimes. Clamp on gas blocks can work in this situation.

 

[SnoopLoggyDog]

PRI Flip Up Front Sight with .750 Crossbolt

PRI Flip Up Front Sight w/ .750" Crossbolt Design fits arrels .750" dia. M16 M4 and AR15. Eliminates the shadow cast on optical sights mounted on the M16 Flattop receiver. Lightweight hard coated black anodized aluminum top post provides Low reflection.

www.precisionreflex.com

Little pricey at $186. I put one on a 20" AR. Got it from an INGO member many years ago, for way less.

Flip Front Sight Gas Block w/Bayo (.750")

This .750" front sight gas block features durable steel two-piece construction and a bayonet attachment. This sight is convenient and easy to install. Shop now!

yhm.net

This one is $162.

 

[Tombs]

The front sight doesn't get in the way, shooting with 1 eye does.

 

[penguinship]

generally agree, replace it completely or just leave it. co-witness isn't a big deal, and if the dot is magnified, you'll see it even less

 

[Mij]

For the cost, maybe buy another upper? Unless you cut it yourself.

YUP, or another gun. Just a thought.

 

[Hookeye]

The front sight doesn't get in the way, shooting with 1 eye does.

I shoot everything both eyes open. Always have.
HOWEVER the Armson OEG doesn't work for me.
Some folks are just different LOL