Are these so called "gas block height front sights"? i.e. most Picatinny gas blocks are lower than an A3 upper.
250288
You are correct, the A3 Upper is higher than the gas block. I had to purchase a riser for the front gas block to 'level' the sights. However, I still recommend the sights, just know that you need the spacer.
250289
No, these sights work best with monolithic style top rails that are the same height, or where the pic-rail on the gas block is flush with the forearm rail or at the same elevation as the upper receiver rail. If your pic-rail gas block is lower than your receiver, it will likely be too low to adjust the elevation high enough.
250290
My gas block is the same height as the forward rail so these work great. If your gas block is lower not sure if they will.
250291
Really not sure. I am using a free floating fore end. I can tell you this. The zero was not hard and the front site post was not extreme one way or the other. And the combat zero on the rear site was pretty close.
250292
I'm not sure what you're talking about here, but these sights have nothing to do with the gas block. These sights mount on the top or side rail and locate the "sight" at a 45 deg. angle thereby clearing the scope.
506891
This is high enough to co-witness. IMO you wouldn't want a scope to be high enough to completely look over the front sight that wouldn't offer a good check weld or shooting position. Your crosshairs will be looking through the front sight post. If you are using 3x and up magnification you most likely will not see the front sight A2 post. If that is a problem change out the A2 for a gas block with folding front sight.
1773342
yes...I have a DPMS as well, and that is why I got these. I am assuming that the gas block is also lower that the handguard and/or standard rail. These are very functional and work well with optics installed, quite decent.
983996
Flip your rifle over. If the two lay flat then no. If they are flat you can use any standard hight front sight. This sight is for the lower gas block. Roughly 1/4 inch lower than the upper rail.
717068
the picture is accurate, front is a 1/4 inch taller, gas block needs to be 1/4 shorter than flattop...if you look at the bad reviews most are too stupid to know which sight they need so they blame the sight for being inaccurate when they needed a different one to begin with, come on people get a clue.....
488826
The front sight is secured on the picatiny rail. Its not good on the railed gas block as it gets to hot if you have a full length quadrail it is the perfect sight.
278724
I found my shots consistently about 2 inches high on its lowest setting at 150 yards. Depends on your gas block. If it's even with where your top handgaurd rail would be, then no. If it's lower, maybe.
1219573
it depends if your mounting your front sight on the end of a free float handguard or mounting directly on your barrel with a gas block. If your mounting on a free float hand guard, then your front sight is going to be way off, even if you use same plane or low plane BUIS. I mounted mine with a gas block because the aiming plane of my rifle looked more in line rather than the aiming plane looked high when mounted on my hand guard.
608293
I couldn't honestly tell you if it will clear a "triangle gas block" cause all I can think of as a triangle gas block is the front sight and gas block in one. If that's what you have I again couldn't speak to the compatibility of this scope mount with a actual front sight seeing as I have a flat top. I would how ever recommend a 45 degree off set scope mount if you have a front sight, and add a rear sight and your red-eye to engage down range as most any distance. If I hadn't gotten the flat top that would have been my set up of choice. Happy trails and may your bullets always go bang. I couldn't honestly tell you if it will clear a "triangle gas block" cause all I can think of as a triangle gas block is the front sight and gas block in one. If that's what you have I again couldn't speak to the compatibility of this scope mount with a actual front sight seeing as I have a flat top. I would how ever recommend a 45 degree off set scope mount if you have a front sight, and add a rear sight and your red-eye to engage down range as most any distance. If I hadn't gotten the flat top that would have been my set up of choice. Happy trails and may your bullets always go... » Read More I couldn't honestly tell you if it will clear a "triangle gas block" cause all I can think of as a triangle gas block is the front sight and gas block in one. If that's what you have I again couldn't speak to the compatibility of this scope mount with a actual front sight seeing as I have a flat top. I would how ever recommend a 45 degree off set scope mount if you have a front sight, and add a rear sight and your red-eye to engage down range as most any distance. If I hadn't gotten the flat top that would have been my set up of choice. Happy trails and may your bullets always go bang. « Show Less
981105
Richard, I own a DPMS L308 and the gas block rail sits about a half inch lower than the rail on the upper receiver. I remedied this by purchasing a riser rail from here on Amazon. Search for the UTG Low Profile Riser Mount with 3 slots by UTG: UTG Low-Profile Compact Riser Mount, 0.5" High, 3 Slots This should fix the problem if the gas block Picatinny sits lower than your upper receiver rail. It did on mine. Because the front sight was too low. My shots were hitting about 4-5 feet too high at 100 yards. This fixed the issue. Richard, I own a DPMS L308 and the gas block rail sits about a half inch lower than the rail on the upper receiver. I remedied this by purchasing a riser rail from here on Amazon. Search for the UTG Low Profile Riser Mount with 3 slots by UTG: UTG Low-Profile Compact Riser Mount, 0.5" High, 3 Slots This should fix the problem if the gas block Picatinny sits lower than your upper receiver rail. It did on mine. Because the front sight was too low. My shots were hitting about 4-5 feet too high at 100 yards.... » Read More Richard, I own a DPMS L308 and the gas block rail sits about a half inch lower than the rail on the upper receiver. I remedied this by purchasing a riser rail from here on Amazon. Search for the UTG Low Profile Riser Mount with 3 slots by UTG: UTG Low-Profile Compact Riser Mount, 0.5" High, 3 Slots This should fix the problem if the gas block Picatinny sits lower than your upper receiver rail. It did on mine. Because the front sight was too low. My shots were hitting about 4-5 feet too high at 100 yards. This fixed the issue. « Show Less
746579
You should be able to keep and use the front sight. The Samson rail tucks in under the lip of the gas block.
59806
Yes, the difference between the gen 3 & 4 guns is in the frame and recoil assembly. The sight cuts are the same. However, in the lesser calibers (9 & .40) most aftermarket sights are calibrated for the G17/22 respectively and on the longslide guns (34/35) they tend to shoot ~4-6"high at 25yds. My Ameriglo I Dot Pro's (9,.40 & 10mm) don't seem to have that problem but be warned with the .45.
2049735
I'm afraid I can't say positively; it's on a flat top with a gas block front base to keep the line of sight clear of obstructions. I put Midwest Industries folding front and rear sights on and it co-witnesses them but low in the Aimpoint's field of view. I would think, in use with a normal height front sight, it would be more towards center.
347444
Yes..this front sight is mounted on my gas block, and together equals the same height as a standard m-4 front sight.NOTE: The rail on my gas block is lower than the rail on the receiver, that is why I needed this standard front sight. {they do make a short front sight for full length rails} hope this helps. joe
1289897
These have some adjust ability but if your gas block is much lower than the receiver rail I do not think they will line up to give you a good sight.
1289896
That depends on how much lower it is. The front sight is adjustable for elevation, but there are limits.As these are 45 degree sights, A lower gas block will effect wind age as well. There is much more adjustment available there, so they should work.
189371
I shoot a rock river arms mar 15 as heavy barrel. These sights mounted on my flat top the poi is 19" higher than the poa at 50 yards. On a gas block I would imagine you would be hitting birds.