AR front rail too short

[Melnic]

Buddy has AR
The upper has a front rail but it’s too short to use the flip up sights he has.
Suggestion?

I have the tools to remove the brake if needed, but I don't really want to remove the gas block that has the rail.

Sent from my iPhone using Tapatalk

 

[Bertfish]

Half assed but he could turn it backwards

 

[River02]

Daniel Defense has a fixed front sight that might work...but it's not cheap. I have this sight sight on one of my builds-- front post functions like an A2 sight.

https://danieldefense.com/rail-mounted-fixed-front-sight.html

 

[Melnic]

Half assed but he could turn it backwards

I may have not been clear, the height form the bore for the front sight is too short(low).
so he's hitting WAY to high
That front rail should be the height of the upper rail which is pretty close to the handguard top

 

[alucard0822]

Need a rail to mount the sight or a "gas block height" sight that fits. Otherwise the rifle will shoot a few feet high because it's not mounted correctly. The gas block can also get stupid hot, so it can melt a polymer sight, most block mounted sights are aluminum.


like this: MI gas block sight

 

[outrider58]

I just put one of these on a buddy's gun. Same fore end.

FLIP SIGHT TOWER W/BAYO

These front sights feature either a round hooded front sight guard that allows for fast and accurate sighting or a standard style front sight guard. They sight base features all steel construction for superior strength in demanding conditions.The flip sig

yhm.net

 

[RRomig]

You can buy risers pretty cheap. They come in all lengths and heights.

 

[outrider58]

You can buy risers pretty cheap. They come in all lengths and heights.

It might get them there, but it's like putting a carabiner on a carabiner. The more links in a chain, the bigger the chance of failure.

 

[RRomig]

It might get them there, but it's like putting a carabiner on a carabiner. The more links in a chain, the bigger the chance of failure.

Lol great analogy

 

[smokey]

https://palmettostatearmory.com/sig-sauer-romeo5-1x20mm-red-dot-sight-black-r52001.html

 

[wilcam47]

Low Profile Picatinny Red Dot Sight Riser Mount with Quick Release

Mount your red dot or sighting system at the optimal height with our low profile (0.5"H x 1.5"L) Picatinny Riser Mount with quick release.

monstrumtactical.com

 

[jokie]

Midwest Industries AR-15 Gas Block Height Front Flip-Up Sight Aluminum Black MCTAR-FFG

 

[jokie]

or this

UTG AR15 Super Slim Fixed Front Sight, Gas Block Height, Black

 

[smokey]

Show it a picture of a hk416 on a warm day.

 

[brianns]

Half assed but he could turn it backwards

I’m for this. He can use this for awhile or indefinitely. Maybe while he looks at other better combinations of gas block front sights.

 

[outrider58]

Half assed but he could turn it backwards

I've done that in certain circumstances.

 

[jrumann59]

He could look at ultradyne sights, a little pricey but they are nice sights

 

[SCARCQB]

You have a gas block rail. You must use a gas block height front sight to get the proper height.

 

[Bountied]

Whole lotta derp going on with this. You can see it's not in the same plane in the photo. There are probably unlimited options on how to fix this. Risers will work but are ghetto, new gas block is probably the best option, taller front sight but then don't have a matched set unless you buy the rear sight as well = $$, or just get a red dot and skip the irons. Gas blocks are cheap and easy to swap but you need the right tools, punches, vice block, roll pin for when you lose the first one, new crush washer, and a wrench for the muzzle device.

 

[brianns]

I’m for this. He can use this for awhile or indefinitely. Maybe while he looks at other better combinations of gas block front sights.

I’m rereading my earlier comment. Back then I didn’t realize it was a mounting height issue instead of a sight radius one. Definitely look at sights that correct for same plane or not same plane mounting surfaces.