http://www.surplusammo.com/surplus-ammo-arms-ar-15-m4-16-upper-receiver/ would this upper be nj legal. thanks Bob

thanks Bob

 

 

Huh???

 

Well, you asked. Can't see the undeside of the gas block, so I can't tell if it has a bayonet mount - but unlikely. It has what appears to be a standard A2 birdcage flash hider, which is a no-no and needs to be swapped for a pinned comp. That would be it as far as legality goes, but consider - you will have to spend additional money (beyond what you spend for compliance issues) for sights. That can be anywhere from $60 for a plastic set to $240 for a good set of folding Troys. And/or money for an optic. The barrel is Chrome moly and not chrome-lined.

 

I think you can do better with an upper with branded components. JMHO, and I am the farthest thing from an AR expert - many on here are way better qualified than me to pass judgement/make recommendations - so wait to hear what they say (if indeed your OP was actually addressed to me - not like Bob is a unique name).

 

Adios,

 

Pizza Bob

thanks i really dont have a clue when it comes to theese ar's .i did not realize the other things you pointed out.

 

Uppers you will find that are nj legal from the box are ones with bull barrels and the gas block cant have the bayonet lug. If you dont want that style you have to make sure that the barrel has a compensator not flash hider and that its pinned and welded. As far as barrel choices their is chrome moly , chrome lined and stainless steel. Stainless cost the most but accuracy is best, chrome lined barrels last the longest and are the middle of the price range and require only basic cleaning. Accuracy of chrome lined barrels are good but plating on a micro level isn't perfectly even, so some accuracy is lost. Chrome moly is accurate but barrel wears faster then other two options, after shooting, the barrel needs to be cleaned well because it has the least corrosion resistance.

Del-ton makes good uppers Midwayusa has some good deals on DPMS stainless bull uppers right now and Jsesurplus has nice uppers aswell.Palmettostatearmory has some really good packages but for nj there is more modding needed for most of the uppers because they all have flash hiders and bayonet lugs,aimsurplus has good prices on spikes tactical uppers but them being in stock is sometimes a issue. Those are not the only companies but they are the ones I have dealt with and have seen uppers with good components at good prices. Best of luck

dont mean to thread jack, but im also barrel hunting, and wanted to know approximate round count life for each type of barrel?

there is no bayo-lug on the gas block.. so thats ok..

 

the threaded barrel and what appears to be a regular A2 flash hider would be the kicker..

 

SAA usually (if you read there shipping notes) won't ship into NJ mostly anyway.. (just sayin)

 

if you want it.. ship it to ADCO have them pin/weld a brake/comp on it and be done.. Can't have flash-hiders in NJ..

 

@ david..

I went with a BCM Hammer Forge Upper they have for like $499.. supposedly BCM"s Filthy-Fourteen AR rifle is past 28,000 rounds..

 

I heard about 30000 is the limit.. but I don't know..

 

I am at 460 on my BCM upper so far.. I have 1300+ thru my PSA upper (in 2 months)..

 

Anyway, more BCM shooting this weekend..

dont mean to thread jack, but im also barrel hunting, and wanted to know approximate round count life for each type of barrel?

 

It depends on some factors. In 2000 U.S. Army did a report and said average life of their steel, chrome lined barrels, with 1/7 twists in their M16A2's/m4's was about 9600 rounds. Keep in mind these rifles see full auto use and they use full power rounds,and 1/7 twist barrels burn out quicker then 1/9 with such loads.

 

In civilian use these chrome lined barrels would last about 20k rounds due to lighter loads and being semi auto being the main factors.Chrome moly about 10k, and SS barrels about 10k

 

Advantages/Disadvantages:

Chrome lined gives the longest barrel life, and is reliable and I would use in shtf situations and plinking.

 

Stainless Steel gives you the most accuracy and reliability in its barrel life and I would use in match shooting and shtf situations and plinking.

 

Chrome moly is more accurate then chrome lined at longer distances but needs to be cleaned after most uses, I would not trust it for shtf situations and wears faster then the chrome lined barrels, I would only plink with these barrels.

 

When it comes to match shooting,barrel life is subjective, I know guys that toss out SS barrels after 3k rounds because they see a difference at 200+ yards they dont like. However those barrels could still be great for thousands of rounds at 50-100 yards.

1/7 twist barrels burn out quicker then 1/9 with such loads.

Wha? Can you point me toward where you found this?

 

supposedly BCM"s Filthy-Fourteen AR rifle is past 28,000 rounds..

I have no idea how many it has through it now, but Filthy 14 surpassed 40,000 rounds in November of last year --> http://www.ar15.com/forums/t_2_138/196990_Filthy_14_is_now_over_40_000_rounds.html

Heres the SWAT article for anyone whos never read it --> http://www.slip2000.com/art-swat2.html

1/7 twist gives faster rotation on bullet creating more wear and more heat, this is more noticeable in rifles where someone does a lot of rapid firing with their rifle or rifle can do full auto.

Can you link to where it says this? Can you say how much quicker they will burn out? Did you read the "filthy 14" links I posted earlier? That rifle has 40k+ rds through the same 1/7 barrel with no problems.

 

Im not saying your wrong, but this is the first time Ive ever heard that.