I’m looking for a 20 inch government profile barrel assembly with a 1 in 7 twist in 5.56mm, that’s close to military grade specs as possible. I would prefer to buy the barrel non stripped, with F marked sight base and M4 feed ramps pre-installed.
Can anyone recommed a brand?
I’ve had great luck with BCM in general, no experience with their 20inch barrels. They do seem to be out of stock.
http://www.bravocompanyusa.com/20-Rifle-Barrel-s/37.htm
You might find a deal on a used one, 20inchers are unpopular now.
The upper assemblies are in stock…
http://www.bravocompanyusa.com/BCM-M16-Government-20-Upper-Receiver-Group-p/bcm-urg-gov-20.htm
bushmaster has exactly what your looking for.
I would get the BCM upper without a second thought, for your desired features.
Bushmaster does make (or has recently made) the same configuration, but you would be paying for and getting an iffy bolt carrier group, and hoping that the front sight base is not canted. You won’t be worrying about assembly or materials with the BCM, and you won’t be worrying about the carrier group if you get a BCM, DD, LMT, or other high quality carrier group (I mention the others because the BCM groups are so often out of stock).
I just need the barrel, front sight block, etc. I already have the upper receiver.
I have recently looked for the exact same thing - a barrel with an installed, pinned FSB - without any luck. Here’s the closest I’ve found:
Green Mountain Barrels 20" A2 style, $149+ shipping and tax (they charge tax for all states that have a sales tax, apparently):
Get a FSB installed professionally, $145 total (or $130 if you are OK with straight pins):
http://www.adcofirearms.com/shopservices/shop_.cfm?code=5
That’s over $300 and a lot of hassle and you need to supply the receiver, delta ring assembly, flash hider, sling loop, etc. To me the $399 fully assembled BCM upper looks like a better deal.
I would be happy to hear of less expensive options, but I haven’t seen any if you want a properly installed, pinned FSB. When BCM had the Sabre 20" barrel with an installed FSB it was $379 for just a barrel and FSB:
Since Sabre is out of business I assume that item is permanently out of stock.
Do you want stainless or chrome lined?
If CL then wait for Bravo Company to restock.
If stainless, then there are a few options out there. Like the White Oak Armory DMR barrel.
20" barrels don’t need M4 feed ramps.
M4 feed ramps may not be needed, but they don’t hurt. Some 20in have them some do not. Main reason they were not invented before the M4 was because the riffle pulse is not as violent so the mags could feed them into the regular riffle design. The M4 feed ramps in my opinion help the riffle too.
M4 feed ramps have a sharper, steeper angle, which in theory can affect accuracy. If they aren’t needed, why add them?
Well I never thought of that (angle change in relation to scraping the bullet) but I guess that could be a concern. But if this were an issue, wouldn’t it be an issue on all weapons with M4 ramps? Seems to be everyone has moved to those for some reason.
If the upper has M4 ramps, the barrel should as well.
Not currently in stock, but-
http://www.shop.dezarms.com/product.sc?productId=121&categoryId=10
My upper does have M4 ramps. I just might go with the BCM barrel.
Doesn’t the Marine Corps M16A4’s come with M4 feed ramps?
Here’s a Sabre Defense with 1/7, M4 ramps, chromed bore and chamber (5.56) and F-sight. Third one down the page: http://www.pkfirearms.com/Sabre_Defence_Barrels/65/c
White Oak Armory There is both a DMR barrel with flutes and a plain one without. You can get a F marked sight post with it for an additional cost.
Please use the ORANGE search button. There is alot of information posted here about feedramps. The short answer is that M16 rifles don’t need it. The M4 does.
The man asked for Govt profile…
I pulled one of the 20" barrels from a BCM upper and used the flat top receiver for another project.
Or check the link below for a “FN Original M16-A2 Barrel Grade A, 1 in 7 twist.(Excellent Condition)”, but it probably won’t have the F marked front sight.
Thanks for all the replies and the links.