I have a Pre Ban Sporter HBAR Upper without a bayonet Lug, as most are. Is therea way to add a bayonet lug to it. I once read someone offering this service but I cant find it.

I don't have any personal experience with this accessory or the company. I was looking to add a bayo lug also.  

www.riflestocks.com/html/ace_ltd__products_5.html

NEW! Clamp-on M16 bayonet lug. Clamps rigidly to barrel; allows use of NATO type M16 bayonets.  Note: a 22mm NATO diameter flashider or compensator must be used for proper fit of bayonet.  ACE LTD's pin-on compensator is 22mm in diameter.
POBL:  $24.95

Quoted: I have a Pre Ban Sporter HBAR Upper without a bayonet Lug, as most are. Is therea way to add a bayonet lug to it. I once read someone offering this service but I cant find it.

Why would you want one?

well I don't want to actually install a Bayonet onto the rifle, I'd just like the lug on since it is more artistically and aesthetically closer to the M16 A2 profile and just makes it more "evil"

Katman:

To achieve the "look" you want you must replace the front sight base with one that has a bayonet lug.  Finding a base w/lug for an HBAR or machining a skinney one to fit raises the cost.  To complete the visual effect entails adding a A2 muzzle brake such as a Wilson or KKF to remain post-ban legal.

Trying to weld a Bayo lug on is NOT worth the trouble.  You need the A1 or A2 style flash suppressors to corretly hold the bayonet, if you ever wanted to mount one.

HTH....Geno

geno, the HBARs use the same USI A2 type front sight tower/bayonet lug assembly as any AR15A2/M16A2 type rifle. Katman is also discussing modifying his pre-ban Colt Sporter HBAR, so there is no need to use one of those USGI A2 lookalike post-ban compensators. In fact, he should already have a USI A2 type flash suppressor on it.

Katman, from past discussions, I have gained that changing front sight towers is a real pain in the ass. It is not just a simple matter of driving out the pins and swapping towers. Welding or otherwise adding material to the base of the sight tower and then machining it into a functional bayonet lug is probably not only financially impractical, but could damage the barrel in the process. My 2 cents, if you truly want to get your Sporter HBAR as artistically and aesthetically close to an M16A2 as possible, you need to lose the heavy barrel, too. Look around for a Colt government profile barrel complete with front sight tower and bayonet lug. They can usually be found for $100-$200. Rebarreling is a simple task to perform yourself or inexpensive to pay someone else to do it. Then you will be as close to an M16A2 as possible.

with all do respect boomer.....WHAT ARE U SAYING? changing front sight bases is cake walk, just gotta take the pins out and the gas tube retent pin as well and that is it!!!
i've done it and i can't say is dificult
it took me only one hour.

the dificult thing is to ge those FREAKINGS preban front sight bases :((((((((
i'm looking for one of those too (colt)

I found one at Del-Ton $29.95
www.del-ton.com/Barrel_components.htm



is it REALLY that easy? I once read somewhere that fromt sight pins are never exactly allligned on sights. If it's that easy then I may pursue. right now I have my upper for sale. if it doesn't sell I may try this.

www.ar15.com/forums/topic.html?id=27856

Quoted: with all do respect boomer.....WHAT ARE U SAYING? changing front sight bases is cake walk, just gotta take the pins out and the gas tube retent pin as well and that is it!!! i've done it and i can't say is dificult it took me only one hour.

What I was saying is that although I have never done it myself, every time this topic has come up it seems as though everyone who has tried to swap front sight towers agrees that it is usually both difficult and frustrating. Apparently, even minute differences in the position of the holes drilled into the base of the sight tower can make properly fitting a different sight tower a real pain. Oftentimes you cannot simply redrill or ream out the hole without causing a poor, loose fit. Again, I have not yet attempted to do this myself so this is second hand information to be taken for whatever it may be worth. I am not saying that actually banging the pins out is any big deal, just that fitting a different sight tower onto a barrel has been reported to be more involved than simply knocking a few pins out and then driving them back in. You are likely to get a more thorough and knowledgable answer by posting this in the Build It Yourself Forum.

By the way, did you actually change sight towers or just remove and reinstall your old one?

both asa and dpms offer preban front sight towers.  but is it legal?

Boomer:

Thanks for the info on interchangeability of front sight towers.  I only have a Colt & Armalite HBAR available for measurement; no 1:7, A2 style military bbl to measure.  My pre-ban sight towers looked like they had enough meat to machine to fit an HBAR.

Katman:

I too have heard that it CAN be difficult to propery mount a new front sight tower on a used barrel due to slight differences in original fitting.  No personal expereince though.

FWIW....Geno

i actually changed towers on a friend's ar (colt) and now i was looking to do the same on mine (colt too).
:)
thanks katman
KATMAN DA MAAAAN
hunter
out.

I swapped out bases on 8 Colt barrels a couple weeks back. The carbine barrels were pre & the rifle barrels were post. I went the other way per customer's request. All Colt.  All needed redrilling and reaming on at least one of the holes, with an eye on correct vertical placement. This dispenses with the myth.

Kurt/KKF

Illegal after 1988

huffits,
Quit posting that bullshit!
The FEDERAL law is 1994.
The Kalifornication law is 1989.
This is the third post in as many forum boards where you have posted this bullshit.
Knock it off.

Quoted: changing front sight bases is cake walk, just gotta take the pins out and the gas tube retent pin as well and that is it!!! i've done it and i can't say is dificult it took me only one hour.

Well you got lucky - any others I have seen done or have done have required linning up one pin and redrilling for the second.

The Colt pre-ban Sporter Rifles came from the factory without a bayonet lug.These were post '89 when the "EVIL ASSAULT RIFLES"became a target.I assume it was to cut down on those "drive by bayonetings"that were so rampant in the 1980's.Technically you aren't legally able to alter a rifle but it was voluntarily done by Colt's.My philosophy is that what if you are stuck with a bayonet?You MUST have a rifle to put it on....am I right guys???
Besides how are you supposed to butter your toast in the field??

The Colt pre-ban Sporter Rifles came from the factory without a bayonet lug.These were post '89 when the "EVIL ASSAULT RIFLES"became a target.I assume it was to cut down on those "drive by bayonetings"that were so rampant in the 1980's.Technically you aren't legally able to alter a rifle but it was voluntarily done by Colt's.My philosophy is that what if you are stuck with a bayonet?You MUST have a rifle to put it on....am I right guys???
Besides how are you supposed to butter your toast in the field??

Quoted: The Colt pre-ban Sporter Rifles came from the factory without a bayonet lug.These were post '89

True

Technically you aren't legally able to alter a rifle...

Untrue - that was Colt not Federal Law - check State - those Calfornia guys are Weird.