AR-15 BS Thread

Will do, I have a box of fusion also, I haven't fired any of it though, I've only had time to get 25 rounds through the rifle for a function test and it was all UMC ammo.

 

Uh, fellas - the Winchester ammo pictured in post # 12391 is 1st run, real deal Holyfield M855 ammo. USG issue, and probably leftovers from Winchester's ongoing SAW ammo contract.

It is not the usually found at Wal-Mart Winchester White Box (WWB) stuff. Buy with confidence.

Same goes with the 9mm 124-grain ball (in a box labelled "9MM NATO"), which is also 1st run from the pistol ammo contract.

FWIW - Winchester's Ranger line is probably some of the best duty/self-defense ammo that you'll find anywhere.

 

Nothing better then busting open a ammo box at the range and seeing Winchester

 

All the 115gr 9mm Winchester I ever get (Walmart or not) acts funky. And my guns eat literally everything. Even the perfecta brand 9mm from Walmart shoots great. Winchester .40 is no problem. Idk what the deal is with the other two. The one time I shot Winchester 55gr 5.56 it was a problem too. Idk why.

 

Well the IWT 10.5" 300BO ran like a champ yesterday. 416 SS hand lapped barrel with pistol gas length, adjustable gas block. It ran Rem subsonics with full open gas block and Rem Supersonics with 6 clicks open on the gas block. No overgas issues, used a standard carbine buffer and spring so it'll just slap right on your standard lower.

I just used one of our test handguard said and upper receivers so this is not a finished product just a test product.

 

It's hard to compare our 300BO with the 7.62x39 because of how set up the gas system. Most manufacturers over gas their rifles and uppers for reliability purposes. Customers add heavier buffers to counteract this and bolt bounce. That will work but it's not the correct way to deal with the issue although it is an inexpensive fix. The proper way to fix the issue is tune the gas port size for the round intended to be used. Again that's not viable because people use so many different types of ammo with different pressures and burn rates. So we use adjustable gas blocks to accomplish this same thing. What does this do for you? First and most important it allows the upper to shoot both subsonic and supersonic without ruining your brass, beating your rifle or shoulder to death and increases bolt life.

By tuning the gas block to only let the proper amount of gas to cycle the weapon you decrease wear and tear on the BCG and rifle overall (which a heavier buffer will also do but to a less fine tuned degree) it also means less felt recoil allowing a flatter shooting rifle and faster follow up shots (which a heavier buffer will not do). So to answer your question our upper on your pistol will have a lot less felt recoil than a 7.62x39 without a tunes or gas system.

 

Yeah I did the same when the UBR came in. I remember yelling get this thing shipped ASAP!

 

IWT 6.8 PDW

 

Does anyone have a UBR for a precision rifle build? I'm debating getting one for my 6.5 grendel. I found a used one and if the price is right I'll get it. If I get it, it will most likely end up putting it on an SBR if I get one, until then it will be on the grendel

 

I got a PRS for my .308 build

 

good blemish deals for AA Piston uppers:
http://www.adamsarms.net/products/s...18114938&utm_medium=email&utm_source=hs_email

 

newb question!

I was looking at some RR triggers kits, and in their descriptions they mention different color instructions cars. can someone please explain this to me?
Thanks in advance!

https://www.rockriverarms.com/index...tegory_id=434&CFID=502491072&CFTOKEN=98991727

 

Looks like they manufacture them differently. My dad has the chrome and my brother has the sporter. The sporter is better.

I have a geissele SSA in my battle rifle and SSA-E in my precision rifle. I will stand by them forever.

 

200 yards with factory Hornady 168 grain AMAX. 1.6875".

 

Looking at getting an AR soon instead of building. Very soon actually. I've been looking at Sig Sauer. How hard is it to find a compatible free float rail for guns that are manufacturer built? Again this may be a silly question.

 

What specifically makes you want the Sig other than the brand? Because you can buy a better rifle for less. There have been a slew of issues with Sigs AR rifle. They use this stupid rivet to support the extractor that is notorious for walking out and locking up rifles. Personally I'd pass on that.

Colts are running less than $900 right now in a lot of places, and if you want to put a free float rail on one right off the back, they make a model that is perfect. Just add a rail, stock, and the sights you want.

http://www.lipseys.com/itemdetail.aspx?itemno=COLE6920-OEM2

You could also get a BCM for around $1000-$1200, or an LMT for about the same money.

 

I threw Sig out there because that's what my Pops' SWAT boys are using (he's the sheriff) I liked the gas block? I think that's right, and how it kept the gun clean. Is colt the similar? You're saying Colt makes a model that is perfect to modify right off the bat with my own rail and barrel set up if need be? Hoping just the rail for the time being. Sights as well.

Edit: I see what you mean by that Colt, that is pretty sweet! You can just build it up yourself.

 

For most mainstream AR's it's pretty straightforward to free float the barrel. I have two AR's in my safe that I've swapped the fore ends on without issue. Depending on the gas block installed it can be somewhat challenging but it's not all that difficult to do.

 

You like the Sig because it's gas piston rather than direct impingement. In piston most of the gasses upon firing exit forward away from the shooter when the piston rod operates, keeping the inside of the receivers and you bolt and carrier cleaner. But you still have to clean the gas block area, because carbon builds there. That means removing the rail to clean the carbon fouling in that area which usually requires to sight in every time you remove and install the rail.

There are pro's and cons to both systems. I prefer direct impingement. If you want a better piston gun, get a PWS, from what I know they're the only ones using a long stroke piston system which has less recoil over the more common short stroke piston system.

 

Concerning piston versus DI...unless you're doing one or more of the following:

- SBR
- Suppressed
- Full auto

You're just as well off with a DI rifle/carbine as a piston.