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Hi,
I have a really nice hand guard that utilizes the standard M4 Delta ring set up, but I don't have an A2 front sight/gas block. It's for a 300 blk with a low profile pistol length gas block. How do I mount the delta ring & hand guard with no A2 sight to hold the front end?
Rodney
You need either a triangular or round front cap. This is the sheet metal steel black finished part that fits between the front hand guard and the OEM taper pin type front site base/gas block.
Check to see what kind of hand guard you have. Probably a round type but I am not sure. The triangular front caps were old style. Good luck. I think I have this correct. If not, sorry. I'm getting old.
How pray, do you intend on attaching your front buis without a pic rail hand guard and only a lo pro gb? Only way i can figure's if you reqlly have a pic rail gb or mount both front and rear irons on the reciever- is your gas block lo pro or picky rail?I have a set of really nice BUIS sites and Reflex sight that I plan on co-witnessing. So the big A2 triangle would be in the way. And I would hate to buy one and cut it down with my chop saw. That might turn out ugly and cutting a perfectly good sight just bugs me for some reason. And mounting it upside down would look weird. I'm thinking inexpensive fixes that work well and look good. But I did think of that initially, thanks though. I do need to buy an end cap for it. Thoughts?
Rodney
Install an A2 front sight. I had a 300 upper like that. The gas block was under the handguards, the sight post served only as a sight, and held the front of the handguard in place.
If its a drop in style handguard what I did was remove my low pro gas block and slip the triangle/round front mountplate behind it.
Hi,
I have a really nice hand guard that utilizes the standard M4 Delta ring set up, but I don't have an A2 front sight/gas block. It's for a 300 blk with a low profile pistol length gas block. How do I mount the delta ring & hand guard with no A2 sight to hold the front end?
Rodney
I believe he's dealing with a delta ring assembly. That looks like a free float assemblyView attachment 471237
^^^THIS^^^
That is assuming the LPGB is not designed to butt against the journal shoulder, some are.
I believe he's dealing with a delta ring assembly. That looks like a free float assembly
I didn't realize that, I was going off the OP's statement he had the "standard" fixtures, minus the a2 fsbA standard barrel nut/delta assembly can have a free float handguard. A Centurion C4 and Daniel Defense Omega come to mind.
That's the issue, the OP needs to provide more info, it is really just guesswork right now. Pics would help immensely.I didn't realize that, I was going off the OP's statement he had the "standard" fixtures, minus the a2 fsb
One doesn't just install an A2 front sight, it requires a special jig and drill press for the taper pins to it correct.
Some are OK using the clamp-on alternative, I'd rather avoid them. IMO if your gas block is exposed should be pinned.
Maybe I should have said "have a gunsmith install" - as I meant to infer such. Most folks don't have the tools to DIY that bit.
Suggestion remains, install or have installed the A2 FSB and run the low pro block under the handguards. Then you can run just about any handguard you want with some limits.