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Sionics Patrol Three-E-UR

Hot on the heels of their Patrol Three-E complete rifle announcement, Sionics Weapon Systems is releasing the new Patrol-E-UR upper receiver. This new upper has several customization features and the Sionics quality you expect but still comes in at a lower price point.


  • Configuration: AR15 Style Carbine, 5.56mm NATO
  • Upper Receiver: 7075 M4
  • Barrel: 16”, 41V50, 5.56mm NATO Chamber, 1:8, Air-Gauged, Radiograph and MP Inspected
  • Gas System: Mid-Length, Direct-Impingement
  • Muzzle Device: A2 Flash Suppressor
  • Hand Guard: Free-Float 13″ SIONICS M-LOK Rail – Low Profile Gas Block


  • Medium or Light contour barrel
  • MLOK rail section (5 slot)
  • Magpul MBUS Pro Sights
  • 15″ rail upgrade
  • Included BCG

Now is a perfect time to check out the new Patrol-E-UR because Sionics is offering 5% off for Fathers Day when you use code FATHER2017.


SIONICS Patrol Three-E

SIONICS Weapon Systems just let the cat out of the bag on their upcoming Patrol Three-E carbine. The new rifle shares the same quality as all their rifles but comes at a very affordable price thanks to some careful parts selection. This carbine will come with several features and add-ons not usually found on AR-15s at it’s $950 starting price.

The Patrol Three-E is the first carbine to come out of SIONICS wearing their new branded M-LOK compatible hand guard. It also comes standard with a SIONICS barrel – one of the parts that helped put SIONICS on the map. The grip and stock are from Magpul’s MOE-SL line and it even comes standard with a Sprinco spring!

Here is a more complete look at the specs:

  • SIONICS Barrel – 4150 CMV – Radiograph and MP Inspected
  • SIONICS Bolt w/5-Coil Heavy Extractor Spring and Black Insert
  • SIONICS Bolt Carrier – M16 Carrier – 8620 Material
  • SIONICS Enhanced Trigger
  • SIONICS H Buffer
  • SIONICS Melonite Gas Tube
  • Magpul MOE-K2 Grip
  • Magpul MOE SL Stock
  • QD End Plate
  • Sprinco Action Spring
  • 5-Slot Rail piece for M-LOK Handguard

SIONICS will open pre-ordering for the Patrol Three-E on June 5th.


SIONICS Service Department

It’s no secret that SIONICS Weapon Systems supplies multiple departments around the country with their carbines. There are several reasons for that including the quality of the AR-15s that they produce but one of the things that rely sets them apart is the quality of their support after they make the sale. They have some extremely knowledgeable armorer staff that is able to support their carbines long after the ink on the contract is signed.

Now they are opening up their armorer service to extend beyond just their own carbines and beyond just the departments that they provide carbines to.

Due to overwhelming demand, we are pleased to announce the creation of the SIONICS Service Department. Whether you or your LE Agency needs help dimpling a barrel, rebuilding your AR-15, fixing your AR-15 that doesn’t work or having us build a custom AR-15 for you, we are happy to help. Services are available for any branded Direct Impingement AR-15 and start at $35. Please e-mail us sales@sionicsweaponsystems.com or call us at 520-396-3460 for more details.


New AR15 Barrel Tease from Sionics

Sionics Weapon Systems is testing a new 18″ stainless barrel with black Melonite finish. Their previous 18″ stainless barrel had a bead blast finish and was well known for providing excellent accuracy. If the new barrel can provide the same level of accuracy along with a more durable and less bright finish, it should be a winner.

St. Patrick’s Day Specials at SIONICS

SIONICS Weapon Systems has several St. Patrick’s Day Specials that will be available through the weekend. There are some great deals but I think the pick of the litter is their SIONICS CORE Bundle that includes one of their excellent barrels, their NP3 coated bolt carrier group, and one of their EMS Triggers for $369.95 and you get to pick the barrel contour!

St. Patrick’s Day Specials at SIONICS

You Don’t Have to Go Nuts to Shave Weight on an AR-15 – SIONICS Lightweight Patrol Rifles

If you want to build an AR-15 under 5 pounds, you are going to have to get a little creative and it’s going to cost you. However, you don’t have to start skeletonizing things that shouldn’t be skeletonized or using exotic materials to build a rifle that will still carry light and function reliably.

SIONICS recently posted a picture of one of their Patrol Three Rifles on a scale. It weighs in at a scant 6.1 pounds with top quality, standard parts and in a ready to shoot configuration (with sights).

How do they do it? Did they flute the bolt carrier or use aluminum where you should use steel? Nope. This rifle still has a proper M16 BCG and other reliable, full weight parts. They just make use of a smart barrel profile and quality, lightweight hand guard. Those are the same places you should start when shedding weight. Or… Just check out a Patrol Three at SIONICS.

SIONICS Weapon Systems Short Side Lever for Ambi Safety

SIONICS Weapon Systems has introduced a new Short Side Lever for their Ambidextrous Safety. The new lever is shorter on the ejection port side of the AR-15 to provide more clearance for the shooter’s trigger finger.

The new Short Side Lever will be standard equipment on all SIONICS rifles going forward or it can be purchased separately. It comes with a selector spring and detent when purchased separately.

SIONICS Weapon Systems

Review: SIONICS Weapon Systems Patrol III Upper

I have been using SIONICS Weapon Systems products for years – especially their barrels. When I heard that they were updating their entire line recently with new parts from the likes of TangoDown and Centurion Arms, I quickly placed an order for a Patrol III Upper. I have had the upper in hand for several months and have 1535 document rounds through it. Let’s dive into what I’ve learned along the way.


Before I get into my experience with the upper, lets looks at the details of the upper that I purchased. The Patrol III Upper, starting at the muzzle device and working back, has the following features:

  • A2 muzzle device
  • Purchaser’s choice of Medium or Lightweight contour (I chose Lightweight)
  • Both barrel choices are 16”, chrome lined, 41V50, 5.56mm NATO Chamber, 1:8, Air-Gauged, Radiograph and MP Inspected
  • Centurion Arms CMR M-LOK 13″
  • Low profile gas block in the midlength position
  • 7075 aluminum upper

I also added an optional NP3 BCG which is another SIONICS product that has served me well in the past.

Observations from Use

Let’s get to what you came here for first – reliability and accuracy.

Reliability – This upper has had exactly 1535 rounds through it spread over several range sessions. The upper has never been cleaned though oil has been added as necessary. The vast majority of the ammo used was 55 gr. Wolf Gold .223 that I purchased specifically for this test. The rest of the ammo was Prvi Partisan 75 gr. .223 which was used to check the accuracy of the rifle with 10 shot groups at various points during the testing. There were no stoppages of any kind. It ejects both ammo types to 3-4 o’clock on the dial with a standard carbine spring (CS spring from Brownells) and an H buffer.

Accuracy – I have this recurring problem with SIONICS barrels. I buy them for builds thinking that I’ll just drop an Aimpoint on them and call it good. Then the barrels shoot so darn well that I end up buying more glass to take advantage of it! It happened with the previous medium contour barrel that I purchased from them and it happened again with this one.

I intended for that rifle to host an Aimpoint CompM4 with Scalarworks LDM/CompM4 mount and it did serve as a test rifle for that mount for about 100o rounds. However, the accuracy that I was seeing was so promising that I now have a 1-4x optic installed.

I used Prvi Partisan 75 gr. .223 and a Leupold MR/T 1.5-5x optic for accuracy testing at 100 yards. Accuracy was tested at 300 rounds into the test, roughly 700 rounds into the test, and finally at just over 1000 rounds into the test. I shot two 10 shot groups at each of those intervals for a total of 6 groups. There was no time left for cooling or anything like that. I just aligned the sights and squeezed the trigger 10 times for each group. The target used was a grid square (1.9″) from the 50/200 yard zeroing target that I use.

I never had a group larger than 1.293″. The average across all 6 groups was 1.281″ and you can see what turned out to be a roughly average group for this rifle below. Eventually, I would like to test this with a true “match” ammo as I suspect it will shoot very well. In my book, a lightweight barrel that will shoot consistent 1.2 MOA 10 shot groups with ammo (and a shooter) that is just decent, is darn impressive.

Speaking of the barrel, you really should consider the SIONICS Lightweight Barrel if you are considering a lightweight build. It is not radically thinned pencil barrel. It has a bit more meat on it than some which I like – it is still quite light at 1 pound, 6 ounces. It balances nicely if you care about such things. This combination of accuracy, reliability, and general handiness make it great all-around barrel for general purpose carbine.

The inclusion of the Centurion Arms CMR on this upper is icing on the cake. It is slim, light, strong, and functional rail that compliments the lightweight barrel very well. It lets the upper work well across a variety of shooting positions, makes it easy to carry and hold, and keeps weight to a minimum.

The SIONICS NP3 bolt carrier groups are excellent and I own a few. I have owned NiB coated bolt carrier groups before and they all tend to collect carbon. Most of it will wipe off but before long, they have taken on a dingy gray tone from carbon that can’t be cleaned. The NP3 coating that SIONICS uses doesn’t seem to suffer from the same issue in spite of the fact that it is a similar coating – on paper at least. These BCGs are slick, easy to clean, and have always run well for me.

Wrap Up

Bottom Line: This is an affordable upper that is completely reliable through more than 1500 rounds and shoots consistently at around 1.2 MOA in spite of it’s lightweight profile barrel. I think SIONICS is turning out some of the best uppers and complete AR-15s on the market right now. This upper and every other product I have owned from them has proved that to me.

Check out the Patrol III Upper at SIONICS.

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