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REVIEW: PWS MOD2 MK107 AR15 Pistol

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Designed to replace MP5-style weapons, this “Daiblo” is a sleek and sturdy AR15 pistol. READ ALL ABOUT IT

PWS AR15 pistol

Major Pandemic

While almost every other manufacturer of AR15s is chasing the entry-level price-point customer, Primary Weapons System introduced a $2000 fully-loaded AR15 pistol which sold out immediately! Every inch of this reliable push-rod long-stroke piston-driven AR pistol is dripping with custom and innovative parts.

The market success of the MOD2 MK107 should be proof enough that customers are craving something different, something exclusive, and are more than willing to shell out the cash for feature-loaded AR15s. PWS is regarded by many as one of the top tier of high-tech combat AR platform guns, and has a long history of delivering super premium AR platforms complete with their famed and super reliable piston system.

PWS MOD2 MK107
Feed it good ammo and the accuracy will astound you! Reliability in my test was 100-percent.

CONCEPT
It is important to understand that this AR15 pistol is unlike any other. It’s more than a standard pistol with a cool set of receivers and fancy flash hider. Instead this pistol represents PWS’ latest AR15 platform refinements from its push-rod long-stroke piston-driven MOD1 predecessor. Many consider the PWS piston system as the best on the market. It is in essence a reduced-size AK-47 piston system. PWS modified this design into the AR platform which delivers a push-rod attached to the carrier, a much lighter recoil impulse than other piston systems and a significantly better platform for suppressor use. Disassembly is easy and simple. Break open the upper, removed the charging handle, BCG, and attached long stroke piston, clean the piston and reassemble. Since there is no gas blowback with the piston system, the BCG and upper stay clean and cool even after 1000s of rounds of suppressed shooting.

PWS MOD2 MK107
The gas piston system is a scaled down AK type, and it’s been well proven. Gun stays clean even with a suppressor.

The intent of this pistol was to offer a transitional firearm which could be purchased and shot as a pistol. If the owner wants to have a registered SBR, this configuration delivers a lot of fun shooting during the long wait for an ATF short-barreled-rifle tax stamp. Once a tax stamp is in hand, the rearmost cheek brace and guide rods can be swapped to a Maxim Defense buttstock. Of course some people may elect to just leave it as an AR15 pistol to allow more flexibility in ownership and transportation over state lines.

FEATURES
The MOD2 series adds additional refinements. Additional weight savings is one. A new custom-forged receiver incorporates weight reducing reliefs. Yes I did say “forged.” These are not modified mil-spec receivers, or billet, but rather custom forged upper and lower. For the record, forging does deliver a stronger part.

In the process of strategically lightening the receivers they ended up looking amazingly cool!

PWS MOD2 MK107
Proprietary design forged receivers are lightened and feature full ambi controls.

The lower ambi controls are similar to the Sig MPX with ambi-selector and bolt release in the same position. The lower receiver features an integrated trigger guard, larger flared mag well, and inlets for all the extra ambi-parts. The upper receiver has been trimmed down though reliefs, but also lightened with the omission of the forward assist. Other nice touches are beefing up certain areas to increase strength such as near the barrel extension union on the upper and also adding a captured ejection port door pin.

PWS reduced the number of piston gas pressure adjustment points to just three on the MOD2. To assure the hammer-forged 1-8 twist .223 Wylde barrel’s bark was directed away from the shooter, they attached the PWS CQB brake. I have used this brake on many firearms over the years and personally believe any AR or AK intended to be shot indoors should not be without it. There is magic within that CQB flash hider that I have not found any other muzzle device to deliver.

PWS MOD2 MK107 brake
The PWS QCB muzzle device is amazingly effective, really taking the blast and bark away from the shooter.

The bolt carrier group is PWS’ own anti-tilt piston design finished in a lithium embedded salt nitro treatment (Nitromet). Trigger group is a tuned ALG NiBo which feels extremely good for a duty trigger. The PicMod handguard is yet another PWS innovation which delivers standard picatinny rails which are also KeyMod compatible.

PWS maxim defense adjustable cheek rest
The Maxim Defense Adjustable Cheek Rest gives a solid cheek weld and is easily adjusted, collapsed, and extended via a lower paddle latch.

The most noticeable accessory is the Maxim Defense Adjustable Cheek Rest which delivers a solid cheek weld in a variety of shooting positions. The cheek rest is easily adjusted, collapsed, and extended via a lower paddle latch. The cheek rest can be easily swapped out with an arm brace accessory, or with prior ATF SBR registration, a buttstock using the same paddle latch. PWS has officially switched from Magpul to Bravo Company furniture, and the angle of the Bravo Company grip is excellent for a compact shooting format.

THE EXTRAS
Included is an exceptionally well-made Crossfire soft case capable of accommodating many accessories, 1 Lancer 30-round (depending on state) magazine, BCM Keymod Quick Detachable Sling Mount, a set of Keymod RailScales, $50 gift card to PrimaryWeapons.com, $70 discount card off a Vertx backpack which is sized to fit this pistol, a PWS patch, brochures and manuals. In total, about $300 worth of accessories and coupons is a well appreciated package that lets PWS customers feel the love on a firearm of this caliber.

SHOOTING
With the MOD2 version, PWS did drop factory sights off the installed equipment list, so some type of optic is needed. I elected for the brand new Vortex 1x Prismatic Sparc. This true 1X optic features a button changeable red or green illuminated double-circle dot reticle. It’s freaky fast to get on target, runs on 1 AAA battery, has an etched reticle reticle that is visible even if the battery is dead or removed, a swappable MOA or 5.56 BDC turret, and enormous field of view and stunning clarity.

Vortex 1x Prismatic Sparc
Vortex 1x Prismatic Sparc optic is an outstanding choice.

Due to the fun involved of shooting this setup, I went far beyond my typical 400-round testing and had not one single issue with any ammo tested. Switching to a 1-6 Lucid scope, the PWS MOD2 MK107 AR15 pistol is more than capable of 1-inch 100-yard groups with Federal Gold Match or Hornady Match ammo, but back with the Vortex mounted it was fun to bang away on 6-inch steel all the way out to 400 yards. I found the Vortex Sparc BDC turret settings put me on the target and offered accurate holdovers at the extended ranges.

CARRY
This is a pistol… So based on your local, you should be able to carry it concealed inside a pack just like you would your Glock if you have your concealed carry license. As mentioned, PWS includes a discount for a  Vertx pack which will enclose the entire pistol, but I did had a Sneaky Bags 27-in. SPYDER case which has the look of a tennis racket bag. The SPYDER was a perfect single-sling pack for the fully assembled PWS pistol with 20-round magazine loaded plus offered a ton of storage. Most importantly, this clandestine concealed carry “Sneaky” setup allowed a very fast presentation.

PWS case
A well-made Crossfire soft case is included, and it has plenty of room for accessories. I prefer a much smaller package, so choose a SPYDER bag.

FINAL THOUGHTS
Where the budget AR15 rifle market is softening, the short-barreled PDW AR15 pistol and SBR market is blazing hot. There has been so much un-needed attention to the AR pistol segment from the “Arm Brace ATF re-clarifications,” I am sure some dealers are throwing their hands up on whether to carry AR15 pistols at all. PWS has side-stepped all that with the Maxim EXO adjustable cheek rest while clearly laying out two options for owners — buy and shoot now as a pistol and/or register as an SBR.

PWS pistol

This pistol is targeted toward those who want all the benefits of an SBR without the headaches of going through the long wait and registration process…and want the best AR in the process. The PWS MOD2 MK107 AR15 pistol is an ideal PDW firearm for personal protection without legal headaches and oversight that a rifle or registered SBR might bring. After all it is “just a pistol!”

READ FULL SPECS HERE

SOURCES
Primary Weapon Systems
Vertx
Crossfire
Bravo Company
Vortex Optics
Sneaky Bags

Major Pandemic

[Major Pandemic is an editor at large who loves everything about shooting, hunting, the outdoors, and all those lifesaving little survival related products. His goal is simple, tell a good story in the form of a truthful review all while having fun. He contributes content to a wide variety of print and digital magazines and newsletters for companies and manufacturers throughout the industry with content exposure to over 2M readers monthly. Click HERE to learn more.]