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View Full Version : Smith & Wesson MP15 Sport or Bushmaster A3 Patrolman


T3amSal33n
04-20-2012, 9:12 PM
Pros and Cons from Calgunners that own or have shot MP15 Sport or the Bushmaster A3 Patrolman which one do you recommend?

Tacit Blue
04-20-2012, 9:44 PM
MP15 sport has 1X8 rifling and " 5R riflfing" which reduces bullet deformation upon exiting the barrel. Alot more stuff going on with the MPs nowadays than Bushmaster. Both are chambered for 556 nato pressures, so shooting both .223 and .556 Nato is fine.

Bushmaster seems just to produce the " standard" type of AR15 rifle, and what I mean by that is that they're using the same techniques for building from years ago. The A3 patrol does a have M4 govt profile barrel, not that important unless your attaching a M203 grenade launcher. So the A3 is the closest towards the authenticity of a M4a1 clone out of the two. Minus the choice of the twist rate.

The bushmaster also uses 1x9 which is meant for lighter grain loads, 45G,55G are acceptable. But when using high grain like 62 and 75 military ammo is where you'll start having issues. In essence it's not a combat rifle, it's just meant for as it's described " patrol" because lighter grain loads are usually hollow point ammo for law enforcement. In my opinion the 1X7 ( U.S Military) and 1x8 are the best. However the 1x7 has tendency to over spin lighter loads, so that's why 1x8 is perfectly balanced.


http://www.tcarms.com/firearms/images/5Rvs6groove_Rifling.jpg


http://www.thetruthaboutguns.com/2011/06/benjamin-t-shotzberger/%EF%BB%BF-gun-review-smith-and-wesson-mp15-sport/ read a torture test here about the MP15

NorCalK9.com
04-20-2012, 9:48 PM
Mp15 sport is a goid rifle! I bought one last summer shot it for 2 weeks and got rid if it. But I didnt get rid of it cause it was bad, i'm not much of an AR fan.
In 2 weeks I ran about 1500 rounds of steel cased ammo no problems at all and alls I did was spray wd40 into the chamber.
I have no wxperience with the bushmaster so alls I can say is i'm hard on my rifles and that mp15 took the abuse, I had it so hot from running and shooting one day I could barely see the sights cause all the heatwaves off the barrel. I still regret getting rid of it!

Tacit Blue
04-20-2012, 10:13 PM
Mp15 sport is a goid rifle! I bought one last summer shot it for 2 weeks and got rid if it. But I didnt get rid of it cause it was bad, i'm not much of an AR fan.
In 2 weeks I ran about 1500 rounds of steel cased ammo no problems at all and alls I did was spray wd40 into the chamber.
I have no wxperience with the bushmaster so alls I can say is i'm hard on my rifles and that mp15 took the abuse, I had it so hot from running and shooting one day I could barely see the sights cause all the heatwaves off the barrel. I still regret getting rid of it!

WD40? :facepalm: that's not even really considered lubricant.

MrPlink
04-20-2012, 10:15 PM
Tacit, a 1:9 twist should be just fine for 62gr. I would still go MnP over shrubmaster though.

Tacit Blue
04-20-2012, 10:18 PM
Tacit, a 1:9 twist should be just fine for 62gr. I would still go MnP over shrubmaster though.

I think anything over 62G like 75 G SS109 or military ammo M855 is where the issues start for 1x9.

MrPlink
04-20-2012, 10:22 PM
Nope, 1:9 has no issues with 855. IF using tracers (which are heavier) then issues may come up with stability, which is why the MIL switched to 1:7

Sturnovik
04-20-2012, 10:27 PM
Hm.....I have a carbon 15....1:7 twist...am I understanding that I can safely and practically use 72 grain and that 77 grain stuff I'm hearing the military is fielding?

Tacit Blue
04-20-2012, 10:31 PM
Nope, 1:9 has no issues with 855. IF using tracers (which are heavier) then issues may come up with stability, which is why the MIL switched to 1:7

They switched from 1x12 to 1x7, anyways the M&P15 we can agree still has the edge in every way. Another thing too consider is " gas key" staking on the bolt carrier, which is often overlooked. Lets compare:


Here is a MP15 bolt carrier, notice the lines around the lock screws? They're supposed to be pinched in. This was done incorrectly.

http://i21.photobucket.com/albums/b260/shmauricio/DSC00067.jpg

This is a Colt bolt carrier group look how the difference is. Correct.

http://i21.photobucket.com/albums/b260/shmauricio/DSC00066.jpg


Now the picture of the M&P15 is from a rifle made in 2010 most likley a bad production run. Before you buy the rifle OP make sure to inspect the bolt and see if it was done properly. You can even do the work yourself, but I believe MP15's have a life time warranty.

NorCalK9.com
04-20-2012, 10:42 PM
Wd40 works great in my ak's and did just fine in the mp15sport

Tacit Blue
04-20-2012, 10:44 PM
Wd40 works great in my ak's and did just fine in the mp15sport

no shiz? I'll be honest I tried it in my XD9 and it worked too :rolleyes: Just never a rifle..

Santa Cruz Armory
04-20-2012, 11:03 PM
I wish we could get a truck load of the M&Ps. They're great sellers. The Bushmaster Patrolman's rifle is nice as well. They're catching on. I think folks are still a bit disappointed in the BM Carbon 15 and it's slowing the sales of the Patrolman. Folks will come around.

Santa Cruz Armory
04-20-2012, 11:05 PM
Wd40 works great in my ak's and did just fine in the mp15sport

Hoppe's and WD40 was standard cleaning/ lubing choice for all of our guns as a kid. There are much better lubricants and cleaners today.

TNP'R
04-20-2012, 11:23 PM
Well you all know what I'm voting lol. Regardless of what some will say, I think the newer Bushmasters are excellent rifles.

NorCalK9.com
04-20-2012, 11:33 PM
@blfd1
Lol if it worked when you were young it'll work now.
.OP get the mp15 sport its a darn fine rifle!

MrPlink
04-21-2012, 12:23 AM
Didnt somebody try to claim insanity on the basis of using wd40 as lube for his pistol used in a robbery?

ChaneRZ
04-21-2012, 12:41 AM
MP 15 Sport is a fine @ss weapon. It was my first AR and shot great!

INDABZ
04-21-2012, 9:49 AM
Well Bushmaster Patrol is a cut above the "SPORT" but you would be happy with either one......;)

ZombieTactics
04-21-2012, 3:54 PM
Current S&W production is properly staked.

... anyways the M&P15 we can agree still has the edge in every way. Another thing too consider is " gas key" staking on the bolt carrier, which is often overlooked. Lets compare:


Here is a MP15 bolt carrier, notice the lines around the lock screws? They're supposed to be pinched in. This was done incorrectly.

http://i21.photobucket.com/albums/b260/shmauricio/DSC00067.jpg

This is a Colt bolt carrier group look how the difference is. Correct.

http://i21.photobucket.com/albums/b260/shmauricio/DSC00066.jpg


Now the picture of the M&P15 is from a rifle made in 2010 most likley a bad production run. Before you buy the rifle OP make sure to inspect the bolt and see if it was done properly. You can even do the work yourself, but I believe MP15's have a life time warranty.

Current S&W production is properly staked.