Milazzo-Krieger M-K IIA3 Trigger

Picture of a Milazzo-Krieger M-K IIA3 Trigger

Milazzo-Krieger M-K IIA3 AR Trigger

Back in the day if you shot an AR-15 competitively and needed the best trigger money could buy your choice was a single trigger referred to as “The Trigger” from Milazzo-Krieger. The Milazzo-Krieger was also the most popularly copied trigger to the point Milazzo the man behind the trigger gave up on the market. In 2015 a gentleman named Ron Albanese bought the patents from Milazzo and brought “The Trigger” back to life. Not content to leave well enough alone Mr Albanese improved the original trigger as well as introduced a few new models. 

By many reports the Milazzo-Krieger M-K IIA3 AR Trigger is made better and performs better than the expensive well known triggers that are available today which happen to be triggers that borrowed Milazzo’s original design. The Milazzo-Krieger M-K IIA3 AR Trigger also happens to be less expensive. If you’re in the market for the best and most adjustable AR trigger available today, do yourself a favor and try the Milazzo-Krieger M-K IIA3.

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Milazzo-Krieger Two Stage Tactical Match Trigger System For AR15 / M16 Family of firearms.

The Milazzo-Krieger M-K IIA3 AR-15 Trigger is geared to the person that knows what they want in a trigger. The M-K IIA3 AR Trigger is the most adjustable of all the M-K II trigger systems. You get an adjustable second stage release along with interchangeable disconnector springs used on all M-K II trigger systems, as well as a new safety selector which can be installed from the left or right side of the receiver. Inside the new selector is an adjusting screw that allows the user to set the overtravel to the absolute perfect distance for their style of shooting. Having the adjusting screw in the selector gives the added benefit of steel on steel positive overtravel stops. This is a more firm stop then steel on aluminum found on other triggers. Combine all that with the A2 style short reset disconnector and you have an extremely adjustable, high speed tactical trigger with crisp, clean and predictable National Match release of the M-K II. This makes the M-K IIA3 ideal for your match rifle or that new DMR you have been thinking about. Fits receivers that use the standard GI size 0.155 receiver pins.

All M-K II models include:

  • 1 Hammer
  • 1 Hammer Spring
  • 1 Trigger Spring
  • 1 Trigger Housing assembled with a blue 4.5 Lb. Medium Disconnector Spring.
  • 1 Red 3.5 Lb Light Disconnector Spring
  • 1 White 5.0 lb. Heavy Disconnector Spring
  • Actual pull weight will vary slightly due to receiver tolerances
  • (Disconnector springs are easily changed to the users preference.)
  • 2 Hammer / Trigger Receiver Pins
  • 1 Sample tube of Slip 2000 lubricant

Common Features Of All M-K II Trigger Models

  • Interchangeable disconnector springs
  • Adjustable second stage release point
  • Anti walk pins

M-K IIA3 Small Pin

Small pin (Standard) Will fit rifles in the AR15 family that require standard Mil-Spec 0.155 receiver pins.

For Information on the M-K II trigger system click on this link.





I could probably devote an entire website to Aero Precision’s various AR-15 combos, specials and one of a kinds. Anyhow, this time Aero Precision is combining their fantastic threaded M4E1 AR-15 upper receiver with their Atlas S-One handguard. The AERO PRECISION ATLAS S-ONE M4E1 AR-5 THREADED ASSEMBLED UPPER system is designed to match seamlessly creating an upper so sleek it rivals the rigidity and appearance of a monolithic upper. At $199 the system comes in cheaper than many quality handguards alone.



  • M4E1 Threaded Assembled Upper Receiver
  • ATLAS S-ONE Handguard of choice
  • Handguard Mounting Hardware

ATLAS S-ONE Handguard

The ATLAS S-ONE is the newest addition to the Aero Precision Handguard lineup. Machined from 6061-T6 Aluminum, the S-ONE line of handguards are designed with size and weight in mind, providing the perfect handguard for your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards.

Available in KeyMod™ and M-LOK® profiles with 12” and 15” options (7” and 9” options coming soon).


  • Front and rear picatinny rail
  • Eliminated center of top rail for weight reduction
  • Indexing grooves in 12:00 position for positive grip control
  • Quick disconnect sling socket at the 3, 6 and 9 o’clock positions
  • Compatible with low profile gas blocks
  • 1.3” Inside diameter
  • 1.5” Outside diameter
  • Compatible with mil-spec AR15 upper receivers and barrels

M4E1 Threaded Assembled Upper Receiver

The M4E1 Threaded Assembled Upper Receiver features a new angular machined design that helps it stand apart from standard mil-spec upper receivers. This upper receiver features the same enhanced body profile as our M4E1 Enhanced Upper Receiver but is threaded to accept a standard AR15 barrel nut. It is forged from 7075-T6 Aluminum, precision machined to work with all mil-spec AR15 parts and includes the port door and forward assist pre-installed. Get the billet look without paying the billet price!

M4E1 Threaded Upper Features:

  • New enhanced forging that gives the upper receiver a “billet look”
  • New picatinny profile that blends seamlessly with our Enhanced Series Handguards
  • M4 Feedramps
  • .250 takedown pin holes
  • Laser engraved T-marks
  • Includes port door and forward assist installed





Note the current version of the PWS MOD 2 H3 Carbine Buffer features a fluted black body. The weight is also listed at 5.2 ounces versus 5.5 ounces of the original silver version pictured on this page.

The PWS MOD2 Carbine H3 Buffer is perfect for shooters who need to reduce cyclic rate or dampen recoil. The fluted design features minimal contact points within the buffer tube allowing trapped debris to easily clear. The steel buffer body is protected by a slick salt bath nitride finish for smoother cycling and resistance to corrosion.


  • Salt bath nitride finish
  • Stamped H3
  • 4140 Steel Body
  • Weight: 5.5 oz
  • Lifetime guarantee
  • H3 Heavy Carbine Buffer 
  • Weight 5.2 Oz


Pantheon Arms DOLOS AR-15 Takedown Kit

Picture of a Pantheon Arms DOLOS AR-15 Takedown Kit

Pantheon Arms DOLOS AR-15 Takedown Kit

Quick change barrel systems for AR-15’s are nothing new. I enjoy the ingenuity and engineering that goes into most them.Today’s entry is the Pantheon Arms DOLOS AR-15 Takedown Kit. The DOLOS is one of the most interesting approaches I have seen to date. Basically once an AR upper and barrel are configured for the takedown kit its a matter of pushing a button and rotating the handguard. (Watch the video at the bottom of the page to see the Pantheon DOLOS takedown kit in action.) What I like most about this AR-15 Take-down kit is it’s ability to use non proprietary handguards from quite a few manufacturers listed below.

Extra lock down collars are available to add additional barrels to an upper.

Note – Bolts should not be used with more than one barrel. Get an AR-15 bolt for each barrel you plan on using.

Pantheon Arms Dolos Take-Down System

The DOLOS Takedown Kit allows for quick separation of the handguard & barrel from the upper receiver, resulting in an extremely compact & convenient package. Kits simply attaches to your per-existing AR-15 barrel and is compatible with standard YHM free float handguards (Diamond, Tactical, etc). System works with standard AR-15 gas tubes and gas blocks. Once installed, user simply has to retract the bolt, insert the handguard, barrel & kit onto the upper receiver, turn the system 1/3 of a turn and you have an assembled upper receiver. Kit works great in conjunction with a LAW Tactical Folder for an extremely compact disassembled firearm.

The Dolos is a rapid deployment and takedown system (RDTS) for the AR15. Dolos enables discreet, concealed carry and rapid deployment of any Milspec AR15, extending the capability of any AR15 through its detachable barrel technology.

Benefits of Dolos include:

  • Discreet carry of full size rifle in small laptop bags, backpacks, and bags
  • Rapid deployment
  • Quick barrel changes
  • Multi-caliber transition
  • Hot-swap barrels
  • Easy weapon clearing and cleaning
  • Safe storage

Whether you want to put your AR15 into a backpack / messenger bag for covert carry, use multiple barrels with various calibers, or create your own genuine can of Whoop Ass, Dolos is your cost effective solution.

Why do I need Dolos?

  • Real firepower right here, right now.
    Handguns have a place – to get you to the rifle you should have had in the first place.
  • Fast deployment
    A Dolos equipped rifle can be ready to stop long distance threats and save lives in less than 10 seconds.
  • Small package
    The Dolos enables you to pack any AR into a very small package. It is easy to transport on a motorcycle or any small vehicle.

When do I need Dolos?

  • Backpacking
  • Bugout bag
  • Active shooter response
  • When you want to legally carry or transport a rifle without fear of harrassment, intimidation or arrest


  • Ensure that the lock collar is securely attached to the tri-lug and there is no freeplay in the barrel before shooting your rifle.
  • Take care to protect the gas tube when your barrel is separated from the rifle.
  • Be careful when inserting the gas tube into the upper receiver. It can and will bend bend if improperly installed.
  • Do not allow your bolt carrier group to slam home when your rifle is not fully assembled. Your charging handle will be damaged.
Pantheon Arms DOLOS AR-15 Takedown Kit Compatible Handguards

DOLOS Compatible Handguards

The rails and handguards listed below are compatible with the standard (1.850-30TPI) Dolos/Prometheus lock collar.  (Some may require modification)
 Rock River Arms
  • Rock River Arms DLX Series
  • Rock River Arms NM TRO Series
  • Rock River Arms TRO Series
  • Rock River Arms Aluminum Quad
  • Rock River Arms Aluminum Half-Quad

Yankee Hill Machine

  • YHM Diamond Series
  • YHM Smooth Series
  • YHM Todd Jarrett Competition Series
  • YHM Free Float Tubes
  • YHM Customizable Free Float Tubes
  • YHM Keymod Rails, KR7 Series Only
  • YHM M-Lok Rails, MR7 Series Only

Anderson Manufacturing

  • Anderson 12″ Diamond Free Float Kit
  • Anderson 8.75″ Slotted Free Float Tube Assembly

Unique AR’s

  • Unique ARs custom and stocked handguards (select Dolos compatible under barrel nut type before adding to cart)


Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set

Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set

Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set, Product Sku: APPG100102 – The Aero Precision May Builder Set features an M4E1 set with a Desert MAD Dragon Cerakote finish. These sets are hand finished by MAD Custom Coating.

This package deal includes the finished pieces you need to assemble your own Desert MAD Dragon Cerakote M4E1 Rifle, including an M4E1 Enhanced Upper Receiver, AR 15 Generation 2 Lower Receiver, Generation 2 Enhanced Handguard of choice and Billet Trigger Guard all finished in Desert MAD Dragon Cerakote. Stand out at the range with a unique and eye catching build. This is a one time offer for this finish – once they are gone, they are gone!

Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set Includes:

  • M4E1 Enhanced Upper Receiver finished in Desert MAD Dragon Cerakote. Upper receiver is assembled and includes the forward assist, dust cover and barrel nut.
  • AR15 Gen 2 Stripped Lower Receiver finished in Desert MAD Dragon Cerakote
  • 15″ Enhanced Gen 2 KeyMod or M-LOK Handguard finished in Desert MAD Dragon Cerakote
  • Billet Trigger Guard in Desert MAD Dragon Cerakote

Finish this build off with a matching stock and grip. These accessory pieces are available in a very limited quantity.

This May Builder Set is also available for the M5E1 (.308) platform.

Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set
Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set
Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set
Aero Precision M4E1 Desert MAD Dragon AR-15 Builder Set

Nordic Components NCT4 Revolutionary AR-15 Suppressor Shield Handguard System

Nordic Components NCT4 Suppressor Shield Handguard – Nordic Components announces the NCT4, an entirely new handguard system for short-barreled, suppressed AR-15s. This patent-pending design allows users to extend the length of their handguard when using a suppressor.

The Nordic Components NCT4 comes in two lengths, with either a 6.7″ or 9.5″ handguard to give maximum coverage on 7.5″ or 10.5/11.5″ barrels. The removable shield provides over 6″ of suppressor coverage and additional rail space. Both sections are fully M-LOK compatible and feature a seamless continuous top rail. Suppressor shield mounting is toolless, requiring only the push of a button to unlock the shield.

Fully compatible with standard AR15-pattern upper receivers and able to accommodate most suppressors, the Nordic Components NCT4 is the ultimate in protection, modularity, and mission-specificity for the suppressed short-barreled AR rifle.

“The current trend is for long handguards on AR-15 rifles, generally out to the end of the barrel. This allows more rail space and better mounting locations for accessories. Short-barreled rifles (SBRs) and AR pistols give up this option. However, Nordic Components set out to add a handguard extension when running SBR/Pistol AR-15s suppressed. The result is the NCT4 Suppressor Shield,” said Casey Knutson, Vice President at Nordic Components.

Nordic Components is currently taking pre-orders for summer delivery at


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