|
|
05-05-2017, 05:30 PM
|
Member
|
|
|
Join Date: Mar 2017
Posts: 71
Likes: 7
Liked 73 Times in 29 Posts
|
|
Sport 2 upper matching the bottom?
Does the upper on the sport 2 match with the bottom mine is off a little I figure the use different uppers so they wouldn't match perfect?
|
05-05-2017, 11:20 PM
|
|
Member
|
|
|
Join Date: Dec 2007
Location: Central Mississippi
Posts: 57
Likes: 75
Liked 22 Times in 10 Posts
|
|
I just got mine in March and I haven't noticed any color or shade difference between the black upper and black lower.
__________________
Shoot Safely and Shoot Often
|
05-05-2017, 11:39 PM
|
|
US Veteran
|
|
|
Join Date: Dec 2016
Location: Grays Creek, NC
Posts: 253
Likes: 18
Liked 138 Times in 91 Posts
|
|
Here is another thread from not to long ago asking the the same question, I'm guessing it's pretty common. I was lucky and have a matching set.
M&P sport 2 upper reciever
__________________
M&P15 sport II, Retired Army
|
The Following User Likes This Post:
|
|
05-06-2017, 06:00 AM
|
Member
|
|
|
Join Date: Mar 2017
Posts: 71
Likes: 7
Liked 73 Times in 29 Posts
|
|
My color matches I am talking about the upper machine marks and the lower. The square by the bolt release they are off..
|
The Following User Likes This Post:
|
|
05-06-2017, 07:08 PM
|
|
US Veteran
|
|
|
Join Date: Dec 2016
Location: Grays Creek, NC
Posts: 253
Likes: 18
Liked 138 Times in 91 Posts
|
|
I never noticed but after seeing your pic I checked mine out today at the range and have the same thing, doesn't effect performance so I'm hoping I'll forget about it.
__________________
M&P15 sport II, Retired Army
|
05-06-2017, 07:25 PM
|
Member
|
|
|
Join Date: Mar 2017
Posts: 71
Likes: 7
Liked 73 Times in 29 Posts
|
|
Quote:
Originally Posted by hdrolling
I never noticed but after seeing your pic I checked mine out today at the range and have the same thing, doesn't effect performance so I'm hoping I'll forget about it.
|
Thanks...seen one at a gander mountain shop today like this also..
|
05-08-2017, 12:16 PM
|
|
US Veteran
|
|
|
Join Date: Dec 2016
Location: Grays Creek, NC
Posts: 253
Likes: 18
Liked 138 Times in 91 Posts
|
|
So I never looked but after just cleaning all my rifles from using them at the range this weekend they are all like that, my Daniel Defense and my BCM are both off.
__________________
M&P15 sport II, Retired Army
|
05-09-2017, 06:43 AM
|
Member
|
|
|
Join Date: Mar 2017
Posts: 71
Likes: 7
Liked 73 Times in 29 Posts
|
|
Makes you wonder what uppers they are using?
|
05-09-2017, 02:38 PM
|
Banned
|
|
|
Join Date: Apr 2015
Location: South Of The North Pole
Posts: 1,257
Likes: 491
Liked 710 Times in 424 Posts
|
|
My Sport I and AR-556 both have matching upper's and lower's.
BTW, I noticed a "KEYHOLE" emblem on both of my AR's. What AR part manufacturing company uses this emblem?
|
05-09-2017, 03:05 PM
|
US Veteran
|
|
|
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
|
|
Quote:
Originally Posted by Disabled1
My Sport I and AR-556 both have matching upper's and lower's.
BTW, I noticed a "KEYHOLE" emblem on both of my AR's. What AR part manufacturing company uses this emblem?
|
That is the forge marking... the keyhole is Cerro Forge, if I remember correctly. S&W does all the final machining for the Sport, and I would assume that Ruger does the same.
|
05-09-2017, 03:25 PM
|
Member
|
|
|
Join Date: Aug 2009
Location: Seattle
Posts: 3,422
Likes: 1,002
Liked 3,595 Times in 1,521 Posts
|
|
Pretty sure Ruger does their own from start to finish. They own Pine Tree Casting, a massive investment casting and forging company.
|
05-09-2017, 03:47 PM
|
US Veteran
|
|
|
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
|
|
Quote:
Originally Posted by Racer X
Pretty sure Ruger does their own from start to finish. They own Pine Tree Casting, a massive investment casting and forging company.
|
Not if it has a Cerro forge mark on it... S&W claimed to do it all too back when the original Sport hit the market, yet myself and other members here found forge markings on some... Demand was high and S&W probably couldn't keep up.
|
05-09-2017, 04:17 PM
|
Member
|
|
|
Join Date: Aug 2009
Location: Seattle
Posts: 3,422
Likes: 1,002
Liked 3,595 Times in 1,521 Posts
|
|
Quote:
Originally Posted by cyphertext
Not if it has a Cerro forge mark on it... S&W claimed to do it all too back when the original Sport hit the market, yet myself and other members here found forge markings on some... Demand was high and S&W probably couldn't keep up.
|
I don't know if this info is current, but Ruger's Pine Tree division is so massive, only about 25% of their capacity is consumed in house. They make product for others. It's part of their business plan.
Might have changed in the past few years though.
|
The Following User Likes This Post:
|
|
05-09-2017, 04:28 PM
|
US Veteran
|
|
|
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
|
|
For the original question... unless the forgings are mated together before machining, drilled out together, and then hand fitted, you will have lines that are a little off.
Since the uppers and lowers are machined separately and pulled from a parts bin, there will be slight differences... like the holes being drilled for the pins and they are each a thousandth's of an inch of center in opposite directions on the upper and the lower... It could still be in spec, but cause the alignment to be off ever so slightly.
This is one of those things like slop between an upper and lower... doesn't affect accuracy or reliability, so it's a non-issue.
|
05-09-2017, 04:57 PM
|
|
Member
|
|
|
Join Date: Oct 2009
Posts: 14,661
Likes: 7,937
Liked 20,623 Times in 5,958 Posts
|
|
If things don't match or aren't lined up perfectly, relax. It's mil-spec.
|
05-09-2017, 06:04 PM
|
US Veteran
|
|
|
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
|
|
Quote:
Originally Posted by ChattanoogaPhil
If things don't match or aren't lined up perfectly, relax. It's mil-spec.
|
You know it... we had a process when I was in... Measure with a micrometer, mark it with a piece of chalk, cut it with a chainsaw!
|
The Following User Likes This Post:
|
|
05-09-2017, 06:24 PM
|
Banned
|
|
|
Join Date: Apr 2015
Location: South Of The North Pole
Posts: 1,257
Likes: 491
Liked 710 Times in 424 Posts
|
|
Quote:
Originally Posted by cyphertext
That is the forge marking... the keyhole is Cerro Forge, if I remember correctly. S&W does all the final machining for the Sport, and I would assume that Ruger does the same.
|
You're correct, Cerro Forge Foundry. The 2nd link shows a great close up of the keyhole emblem. The rest of the link is great reading as well.
Firearm Component Fabricators | Cerro Fabricated Products
Receiver Deceiver: Choosing an AR15 Receiver -
|
The Following User Likes This Post:
|
|
05-10-2017, 12:34 AM
|
Member
|
|
|
Join Date: Aug 2009
Location: Seattle
Posts: 3,422
Likes: 1,002
Liked 3,595 Times in 1,521 Posts
|
|
The knowledge I learn here can be staggering!
|
05-10-2017, 06:48 AM
|
Member
|
|
|
Join Date: Mar 2017
Posts: 71
Likes: 7
Liked 73 Times in 29 Posts
|
|
Everything is fine shoots perfect it's just final inspection if you see something not matching up you figure someone say hey lay off the pipe a little that looks like hell..
|
05-10-2017, 09:24 AM
|
US Veteran
|
|
|
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
|
|
Quote:
Originally Posted by Gas tube
Everything is fine shoots perfect it's just final inspection if you see something not matching up you figure someone say hey lay off the pipe a little that looks like hell..
|
If you want perfect lines, you will need to spend more than what you spent on a Sport. Probably would need to skip most commercially mass produced AR-15s altogether.
|
The Following User Likes This Post:
|
|
05-10-2017, 10:47 AM
|
Member
|
|
|
Join Date: Mar 2017
Posts: 71
Likes: 7
Liked 73 Times in 29 Posts
|
|
Don't get me wrong I like the sport 2 I just wanted to know if some were like mine.. There are some that match perfect I just wanted to know if it's a quality control thing..
|
05-11-2017, 02:39 PM
|
|
US Veteran
|
|
|
Join Date: Apr 2009
Location: N.E. Iowa Boondocks USA
Posts: 2,888
Likes: 5,524
Liked 1,599 Times in 993 Posts
|
|
Quote:
Originally Posted by cyphertext
If you want perfect lines, you will need to spend more than what you spent on a Sport. Probably would need to skip most commercially mass produced AR-15s altogether.
|
Yup, Kinda get what you pay for. Got a few that were handbuilt from the ground up, but none of those are close to "run of the mill". Easy to tell the difference between those and assembly line ones.
__________________
THIS WE'LL DEFEND ΜΟΛΩΝ ΛΑΒΕ
|
05-11-2017, 02:44 PM
|
|
US Veteran
|
|
|
Join Date: Apr 2009
Location: N.E. Iowa Boondocks USA
Posts: 2,888
Likes: 5,524
Liked 1,599 Times in 993 Posts
|
|
Quote:
Originally Posted by Gas tube
Don't get me wrong I like the sport 2 I just wanted to know if some were like mine.. There are some that match perfect I just wanted to know if it's a quality control thing..
|
No worries. I have a couple that look like they were the last of what was left over for parts but have been 100% reliable and shoot very well.
__________________
THIS WE'LL DEFEND ΜΟΛΩΝ ΛΑΒΕ
|
05-12-2017, 06:53 PM
|
Member
|
|
|
Join Date: Sep 2016
Location: North Texas
Posts: 804
Likes: 86
Liked 482 Times in 300 Posts
|
|
Quote:
Gas Tube wrote:
Does the upper on the sport 2 match with the bottom...
|
There are minor shading differences on both of the M&P15s that I bought for my sons. A good cleaning and oiling minimized the differences considerably.
Also, the color variation is nothing like the Hydra-Matic built M-16 I carried when I was in the Army. The upper was like a dove gray and the lower looked like it had been anodized gold and had then faded.
|
05-12-2017, 09:28 PM
|
|
Member
|
|
|
Join Date: Jul 2016
Location: Sacratomato
Posts: 445
Likes: 65
Liked 440 Times in 206 Posts
|
|
On my Sport II, the upper and lower appear to be the same color. The square the OP referenced appears to be offset by about 1mm. And the forging was done by Anchor Harvey Aluminum, as shown by the Split A.
__________________
Peace was my Profession
|
|
Posting Rules
|
|
|
|
|