Adjustable AR-15 Gas Piston System by Syrac Ordnance

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Syrac Ordnance recently introduced their new gas piston system for AR-15 type weapons.  It is available with different length pistons to fit pistol, carbine, mid length and rifle gas systems.  The features that set it apart from other AR-15 piston systems is that it is both low profile and adjustable.  The gas block and piston design are smaller than most other piston systems allowing it to fit under a wider variety of hand guards.  There are still some hand guards that it won’t fit under, because it is still just a bit taller and a bit wider than a low profile direct impingement gas block.  But it does widen the options for those wanting to do a piston build.

The adjustability is another new feature of this system.  Adjustable direct impingement gas blocks have become very popular in the last few years and it makes sense that someone would apply the same idea to a piston system.  This allows you to tune down the gas pressure in order to run the BCG only as hard as you need to, which reduces wear and recoil.  There has been quite a bit of interest in these new piston systems, so I wanted to get you some good pictures for a closer look at the components.  The kit includes the gas block, gas piston, piston return spring, bolt carrier and two Allen wrenches.  It does not include a bolt or other carrier parts, so you need to supply those separately.

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In the close up of the bolt carrier included in the kit you can see that it is very nicely made and is certainly above average quality.  It has a melonite, aka salt bath nitride, finish which is very even and good looking.  The machining also looks top rate with zero sharp edges anywhere.  It is far better than your average AR-15 carrier or Mil-Spec carrier.  It has the Syrac Ordnance logo laser engraved on the side and has supporting skids at the bottom rear end to reduce carrier tilt as the piston strikes it.  The carrier key is machined as an integral part of the carrier and has a rounded indentation that matches perfectly with the rear end of the piston.

You can see left and right side views of the gas block below.  It mounts using a clamp on method with 3 Allen head screws which is easy for the average gun builder to install and provides for a strong mount and a very good gas seal.  They also make a pin-on model but it needs to be installed in the factory.  Some claim that for something that cannot be knocked out of alignment, a gas block should be pinned.  But if it is a low profile system that is under your aluminum hand guard, it is very well protected and you would have to break your aluminum hand guard before it could get impacted.  Furthermore, clamp on systems are very strong since they grip across the entire surface by squeezing onto the barrel instead of just pressing up from the bottom.  It is stronger than the set screw method for this reason, and the gas seal is usually the best with this method.  On the top is the gas cylinder with the gas plug in the front which simply unscrews to remove the piston and spring for cleaning.  The larger Allen wrench is used to unscrew the gas plug.  Below the gas plug is the gas adjustment screw.  It is adjusted using the smaller Allen wrench and it has click adjustments for predicable settings that lock into position.  Gas settings can go from completely open to completely closed.  You can’t increase gas pressure, since that is determined by the size of the gas port in the barrel.  But you can decrease pressure as much as you want to find the sweet spot for your gun and ammo.  Gas is released from the two small holes in the top of the gas cylinder that you can see below.

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The piston is a simple design with a cylinder shaped head and a shaft.  A small return spring fits behind the piston head to return it into battery after it strikes the bolt carrier.  It’s about as simple as you can get.  Below you can see the rounded end of the piston shaft which is what strikes the bolt carrier key.  The carrier key has a rounded surface that matches the piston rod so that it strikes in the same place each time.

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Below is a closer look at the gas plug when removed from the gas block, and you can see the gas adjustment screw below that.  Next is a view of the rear of the gas cylinder with the piston rod coming out of it.

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Syrac Ordnance did a good job on this system.  The design is simple, the parts are well made, and it provides features that shooters wanted.  They are available at http://www.nokick.com.

New SOCOM-16 Muzzle Brake Kits

We have some new muzzle brake kits now available for Springfield Armory SOCOM-16 rifles.  We use the very well made Smith Enterprise SOCOM-16 Gas Lock which has 5/8×24 threads and combined it with some popular muzzle brakes for a simple kit that customers can be sure will work together.  The two models we just added have a 7.62mm VG6 Precision Gamma Muzzle Brake and a Lantac Dragaon 7.62mm muzzle brake.  These are both popular, well made brakes that interface well with the Smith Enterprise gas lock. IMG_4140 IMG_4146 To remove your factory gas lock and muzzle brake, which is one unit, you unscrew the gas plug and then unscrew the gas lock/brake.  Then you screw on the Smith Enterprise gas lock, install the gas plug to lock it in place, then install the muzzle brake using the supplied crush washer to properly align it.  Using these kits, you will notice improved recoil reduction and less muzzle jump compared to the factory compensator and they look a lot cooler too.  A great way to customize your SOCOM-16 to your tastes. Of note, the Smith Enterprise gas locks have a higher front sight dovetail mount than the Springfield Armory factory gas locks do.  So the SOCOM-16 comes from the factory with a lower sight base and a taller front sight.  The Smith Enterprise gas lock has a higher sight base and uses standard M14 sized front sights so that you can use any of those on the market.  So if you get one of these, you need to use an M14 size front sight instead of the Springfield SOCOM-16 front sight.  If you use the taller Springfield sight, you will shoot low.  M14 front sights are available in standard, national match, tritium bar, tritium dot and fiber optic configurations.

POF AR-15 Triggers – Great Features and Great Value

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Patriot Ordinance Factory (POF) has a great AR-15 trigger package that’s well worth considering if you’d like a better trigger.  POF is well known for quality piston driven AR-15s and were one of the pioneers in the piston AR market.   In addition to developing one of the first successful AR piston systems that is still popular today, they have many other innovations to their credit.  These include anti-tilt buffer tubes, roller cam pins for BCGs and they were one of the first to use a nitride finish on their barrels.  Quality and innovation has become my expectation when POF comes out with a new part, so when I saw their new AR triggers it got my attention.

The main trigger components are precision machined out of tool steel and pre-installed in a nice looking red, anodized aluminum housing.  This set up makes drop-in installation very simple.  POF went a step further than most with urethane feet added to the bottom of the housing to help make for a perfect fit.  Their trigger is a single stage type set at 4.5 lbs. and is very smooth and crisp.  While many shooters these days seem obsessed with super light trigger pulls, in a high stress scenario, 4.5 lbs. is a pretty good all around weight.  It’s a light enough pull for very good accuracy, yet it has enough feel to it to avoid accidental discharges and to be easy to predict under stress.  I would consider 3.5 lbs. to be a practical minimum for combat or 3-gun type weapon that will need to perform speed shooting, long range shooting and shooting on the move.  A 4.5 lbs. trigger gives you just a bit more of a safety factor without sacrificing speed or accuracy.  The short, single stage pull on the POF trigger helps with speed and quick reset helps with speedy follow up shots.  To add to the value, POF includes a set of KNS anti-walk pins which is a nice touch.  All this for a retail price of $199.00 is pretty good in today’s market where many comparable triggers can cost $30-$100 more and don’t include a KNS pin set.

Why Anti-Tilt Buffers Matter

Did you know that all AR-15 and AR-10 bolt carriers tilt down at the rear end as the action cycles?  This phenomenon called “carrier tilt” became widely known when piston driven ARs became popular because in some cases it was severe enough to cause obvious damage to the gun in short order.  On the piston guns, the gas piston strikes the solid carrier key on top of the bolt carrier to drive it to the rear.  This strike at the top of the carrier causes the lower, rear of the carrier to tilt downward as it starts to move which makes it contact the lower portion of the buffer tube (receiver extension).  On most standard bolt carriers, the rear of the carrier is completely unsupported and there is enough play in the tolerances between the carrier guide rails at the front and the upper receiver to allow this movement.  So a lot of piston guns were getting noticeable wear in the buffer tube or at the front edge of the buffer tube after just a few hundred rounds and customers didn’t like this.  To fix the problem, piston gun manufacturers enlarged the profile of the rear end of the carriers and beveled them or machined “skids” into them so they couldn’t tilt as far and if they did impact the buffer tube, the wear wouldn’t be as significant.  This is a partial solution for the piston guns, but some tilt may still happen depending on the tolerances and there is a bit of movement before the carrier gets inside the buffer tube where the skids can help.

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What most AR shooters don’t realize is that the Direct Impingement Guns or “Gas Guns” also suffer from some carrier tilt.  It usually isn’t as much so it may not result in any buffer tube wear or other obvious visual signs.  But the gas still hits the carrier at the top, just as it does on a piston gun causing the rear to tilt.  It’s impact just isn’t as abrupt as a piston is, so the tilt isn’t normally as severe.  But there is still the same amount of play in the carrier to receiver fit to allow for tilt on a gas gun and it still can have negative consequences even if it isn’t damaging your buffer tube.  When the carrier tilts as it starts moving to the rear and unlocking the bolt, it is putting extra stress on the bolt which is still locked into the barrel trying to turn and pull through the locking lugs.  This stress can eventually cause the bolt to crack and break, normally at the locking lugs or at the cam pin hole, which are two of the thinnest and most stressed points on the bolt.  So that’s a serious problem right?  If your bolt breaks, your weapon is down hard until it can be replaced.

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So how do we solve this problem?  The piston gun manufacturers modified the design of the rear end of the carrier as mentioned above.  That’s a good thing.  Many shooters carry a spare bolt in their pistol grip which is a prudent idea in case one does break.  Some of the top tier companies started making their bolts out of tougher steels and doing more quality control on the bolts which raised the price a bit, but is a good thing for the gun owner and does reduce breakage.  But in my mind, a real solution needs to get rid of the carrier tilt in the first place and remove these stresses from the operating system altogether.  That’s where the anti-tilt buffer comes in.  An anti-tilt buffer has a protrusion at its front end that extends into the hole in the rear of the bolt carrier.  It supports the bolt carrier through it’s entire cycle not allowing it to tilt more than a few thousandths of an inch.  So the buffer tube doesn’t get any wear, the bolt doesn’t endure any stresses from the carrier tilt and the entire system cycles more smoothly because there is less friction.  All in all this is a great solution.  As you should know, there’s always a trade off somewhere for these advantages, so what’s the down side of an anti-tilt buffer?  Since the buffer is holding onto the rear of the carrier, you can’t just pull the rear takedown pin and shotgun open the action.  You have to pull both the rear and the front takedown pins and pull the upper receiver completely off of the lower receiver to open the action.  Not too bad right?  Some folks don’t like this because they are so used to opening up the action that way, but it’s a pretty small trade off for a smoother running, longer lasting operating system if you ask me.  Besides, now days you can find all sorts of easy pull take down pins to make pulling them both a breeze.  So if you want the smoothest running, longest lasting operating system you can have take a close look at some anti-tilt buffers.  The CTS Aktive buffers are some of the best.

AKTIVE Buffer for Fixed Stock AR-10 and AR-15

Without a doubt, the AKTIVE Buffers by CTS Engineering would be one of my first picks for any AR-15 or AR-10 rifle with a fixed stock.  They have a solid stainless steel buffer body with an overall weight that has been finely tuned for excellent performance in those specific platforms.  But even more importantly, they have a shock absorbing piston on the front end and a far superior bumper on the rear end for a dual stage buffering action.  This action really does make a noticeable difference in the smoothness and recoil of the weapon.  I’ve seen a lot of buffers over the years and this is probably the best bang for the buck of any buffer on the market.  The AKTIVE buffers are made in both a standard and an anti-tilt version in so you can have every feature you could want on a buffer.  They run as smoothly and quietly as any buffer system on the market, so if you are thinking about using a suppressor, they are a great choice for that too.  Heavy loads or light loads?  No problem.  Match them up with a tuned, ground and polished JP buffer spring for the quietest operation possible.  You will be very pleased, I assure you that.  If you have a fixed stock AR type rifle, this is one of the best upgrades you can buy for it.

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A letter from Abraham Lincoln to Mrs. Bixby – 21 November 1864

Dear Madam,

I have been shown in the files of the War Department a statement of the Adjutant General of Massachusetts that you are the mother of five sons who died gloriously on the field of battle. I feel how weak and fruitless must be any word of mine which should attempt to beguile you from the grief of a loss so overwhelming. But I cannot refrain from tendering you the consolation that may be found in the thanks of the republic they died to save. I pray that our Heavenly Father may assuage the anguish of you bereavement and leave you only the cherished memory of the loved and the lost, and the solemn pride that must be yours to have laid so costly a sacrifice upon the altar of freedom.

Yours very sincerely and respectfully,

A. Lincoln

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