Colt AR15
I'm looking for a Colt AR15 with 20" gov't profile 1-7"twist barrel in either A2 or A4 version. Does anyone know if that combo exists or where to find it?
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NEED OPINIONS:
I HAVE AN OPPORTUNITY TO PICK UP A COLT COMP HBAR MATCH TARGET AT WHAT I THINK IS A GOOD PRICE. GUN IS LNIB AND HAS THE 20" HEAVY BARREL AND THE REMOVABLE CARRY HANDLE. PRICE = $750.00. GUN IS A POST BAN. HOW DO THEY SHOOT AND IS THAT A GOOD PRICE? WHAT KIND OF GROUPS WILL IT SHOOT AT 100 YARDS? WITH A GOOD SCOPE. THANKS.
NO, I'M NOT EXPRESSING ANGER! I TYPE WITH CAPS BECAUSE I ONLY HAVE THE USE OF ONE HAND!0 -
BTW, that should be a CR-6724 not a CR-6721.New, they can be bought for $1150. Used, depending on how much it has been fired, and if it was fire-lapped correctly, it could be worth $700 to $900. Since correct break-in procedure is the most important factor on value of this rifle, I would make sure to ask the owner how he did it.Boomer
Protect our Constitutional Rights. [This message has been edited by Boomerang (edited 12-09-2001).]0 -
Thanks for your reply. Please explain the process of a break in procedure for the AR15 rifle. I'm not familiar with what your talking about. Thanks Holeshot 0 -
Lapping a barrel is when one fires the gun once then cleans it, fires it again once and cleans it, repeat, then fire two rounds, clean it, and repeat; until you get up to about 8 to 10 rounds before cleaning it. Oh well, I think you get the idea that this is a slow process but many feel necessary to obtain the edge on barrel accuracy. BTW, there are many schools of thought on just how best to break-in an AR-15 rifle in order to acheive great accuracy. I suggest you check out AR-15 websites. FYI, this lapping process is only necessary on stainless barrels, it is not necessary on chrome lined barrels. Matter-a-fact, one does not want to clean a chrome lined barrel every time one fires the weapon as this would decrease that barrel's accuracy. This fact is explained on the Bushmaster Website, FAQ section.Boomer
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Actually I believe lapping is the use of an abrasive paste run through the bore to smoothe it up.Firelapping is the use of bullets that have an abrasive on themThe shoot and clean and repeat is for SS barrels and is recommended by some and not others.Check the various barrel makers various sites for their recommendations and you will get more confused.cpermd 0 -
gotta agree with cpermd, lapping is the use bullets coated in a "sandpaper" type coating. By going from coarse to fine, this is supposed to smooth all imperfections in the rifling. Be aware that fire lapping has been proven to reduce velocity. The groups will tighten up but the velocity suffers. A minimal amount of throat erosion is the culprit. If you are a benchrest competitor and want the group size with no care about velocity, then do it. If you want an accurate hunting/plinker/paper killer, then don't!!!! To break in a barrel is the process of cleaning the barrel between shots as previously mentioned. The small particles of copper and lead find their way into the tiny pores in the metal and fill them. This seals the barrel in a manner of speaking and creates a more uniform gas pressure flow which is the key to accuracy. All rifles should be broken in this way for maximum accuracy and barrel life. not just an AR. Hope this helps. Take the time to break em in correctly!!! 0 -
Oh yeah, almost forgot, the rifle in VG condition should go for 800-900 bucks if it has been taken care of and not been shot out. $600-700 for good cond. 0 -
Sorry, forgot to mention the special abasive buddits you have to use. Also, I meant to say fire-lapping not just lapping. cpermd and JustC are right on the mark.BTW, this is the start of a good thread. Does anyone know if this subject has ever been started before.Like a said previously, there are schools of thought on this subject.Boomer
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