Description
Griffin MK1 Suppressed Uppers offers premium features and reliability to each user and allows end users to configure their upper to fit their needs. Standard and available features:
FEATURES:
HEDP™ Barrel
Griffin HEDP™ Barrels provide High Endurance Dual Purpose functionality- offering high durability and precision accuracy. Nitrided 416R stainless steel provides the highest possible hardness and longest throat life available with match grade bore dimensions and bore finish. HEDP™ barrel bores are hand lapped, ensuring batch to batch consistency and accuracy. TRUE-BORE™ concentric suppressor grade threads provide an optimized thread interface for your silencer regardless of brand or model. M4 feed ramps and chambers are polished prior to nitriding for smooth reliable feeding, chambering, and extraction. Gas ports were carefully engineered to provide reliable function suppressed or unsuppressed with 5.56 NATO ammunition. M4A1 contour diameter between the chamber and gas block for minimal POI shift with suppressors and maximum accuracy and durability while maintaining field weight.
Features:
- 416R SS barrel manufactured from stress relieved certified barrel steel
- Black nitrided for extended service life
- Magnetic particle inspected
- Button rifled
- 300 BLK chamber
- Pistol length gas system
- .750" gas block journal
- Medium diameter for reduced POI shift / Increased Accuracy & Durability
- Air gauged and hand lapped bore
- Polished chamber and M4 feed ramps
- TRU-BORE™ suppressor quality threads
- Suppressor optimized gas ports
- .625" , 1/2x28 industry standard threads
Specs:
- Length: 9.5"
- Weight: 18.7 oz.
PRIMO Gas Block
The PRIMO Gas Block is a low profile billet machined, .750 ID block, made from nitrided 416R crucible alloy steel. Knurl grip cup pointed fasteners ensure a secure attachment to host barrel.
Features:
- 416R Crucible Alloy Steel
- QPQ Nitride finish
- .750" gas block diameter compatible
- low profile design
Specs:
- Weight: 1.5 oz
SR Rail
Griffin Armament® M-LOK compatible SR rails (Suppressor Ready) allow up to 1.5” outside diameter silencers to be mounted inside the octagonal M-LOK rail. This provides suppressor aficionados a sleek, and compact overall length to AR15 type firearms.
Design objectives of this rail were to provide a suppressor compatible rail, with increased rigidity and durability over similar weight and profile current market options. A custom extrusion provides significant internal reinforcements to reduce flex when loading the carbine on the rail. These reinforcements provide rigid mounting for IR laser aimers ensuring minimal POI shift when torque is applied to fore-grip type accessories, or when loads are applied to the rail such as practical shooting off barricades or when loading bipods for rapid follow up shots. Internal practical testing showed substantial reductions in POI shift with laser aimers versus competing "slim rails" that lacked this notable product feature.
The new SR rails features a close tolerance, heavy-duty, 7075 aluminum, T-6, type 3 hard coat anodized finish. The barrel nut can be easily installed to 35-85 ft/lbs using the included Griffin Armorers Wrench. The new slip fit clamp design is extremely user friendly and does not require any shims or special timing methods. The clamp geometry in the rear section of the rail is low profile and ergonomically pleasing even for long durations of extended carry at static security positions. Flat head T15 torx screws should be tightened to 25/in pounds. The included 45 degree picatinny QD sling swivel can be installed on the top picatinny rail to the desired position of the end user. M-LOK flats on each 45 degree surface allow for mounting of your favorite M-LOK accessories. A contiguous picatinny top rail ensures repeatable and accurate mounting for night vision and thermal systems.
Features:
- 7 sides of M-LOK interfaces
- Contiguous 1913 Picatinny top rail
- Low profile, user friendly, clamp installation design
- 6061-T6, Type 3 hardcoat anodized SR Rail
- 7075, T-6, Type 3 hardcoat anodized, aluminum barrel nut
Specs:
- Length: 12.5"
- Height 2"
- Internal Diameter 1.54" (measured from inside of reinforcement spars)
- Width: 1.54"
- Weight Installed: 11.9 ounces
Explorr® .300 Taper Mount Suppressor
The EXPLORR® series was built on years of prior experience and R&D with tubeless designs. Relatively unknown, Griffin started pushing the limits on modern suppressor engineering when in 2010, they designed the first tubeless silencers in the US. Tubeless designs, although relatively featureless, provide the most optimal strength to weight ratio of any construction method. With a solid background in tubeless suppressor engineering, Griffin sought to push the limits of what was capable by creating the EXPLORR® series of suppressors that hit titanium weights with a more durable material. Lower weight means smaller point of impact shift, higher unsupported position accuracy potential, and less fatigue to the user when carrying equipment.
The EXPLORR® is fully CNC machined, and is now laser welded to reduce weight but increases the overall durability of the suppressor. The benefits of laser welding include a much deeper penetrating, evenly distributed precision weld to greatly enhance the strength of the attachment bond, while also creating a more polished appearance to the exterior of the suppressor.
Every component in the EXPLORR® is manufactured from solid, high temperature corrosion resistant 17-4 Stainless Steel, and then H900 heat treated to ensure maximum service life is provided. Years of internal testing has found 17-4 stainless steel to provide longer service life than 718 Inconel, the prior market leading alloy. 17-4 stainless is also twice as strong as cast Stellite 6, used by some industry companies.
Rail Shield™ kit
The Griffin Armament Rail Shield™ 4 piece M-LOK Compatible furniture kit is the first serious hard use furniture set to reach the market. Unlike other systems relying on plastic snap on attachment, the Rail-Shield™ furniture kit uses grade 5 fasteners for solid attachment. Rail shield panels protect the shooters support hand from direct exposure to hot rails, as well as insulate during handling in extreme cold weather. The optional handstop bottom panel provides ergonomic enhancement and recoil control. Texturized surfaces do not drag on gear, or cause discomfort but promote positive control of the firearm.
Includes mounting hardware, 2 contour side panels, 1 handstop bottom panel, and one alternate flat bottom panel. Mounted weight is 2.4 ounces, total weight with the optional flat panel and handstop (one of which is mounted in the used configuration) is 3.1 ounces
Features:
- Grade 5 mounting hardware
- 4 colors available (Black, Grey, FDE, & OD Green)
- 2 mounting configuration options
Specs:
- Mounted Weight: 2.4 oz.
- Total Weight: 3.1 oz. (with optional flat panel and handstop)
Enhanced BCG
Why a BCG from Griffin Armament? The simple answer is that these BCG's are the best we've used in our ten years of military service and over a decade of industry involvement. When you look at a top shelf product you can see its quality. These are the best mil spec pattern there are.
The Griffin BCG combines an 8620 carrier, 9310 Bolt, 4340 cam pin and extractor. All the proper heat treats, the correct shot peen, and the often neglected post heat treated grind are present. In a market filled with cast component BCG's, all components are billet machined and all surfaces receive a finish pass in machining for improved surface smoothness. There are varying degrees of quality in Melonite QPQ finishes. These BCG's went to 4 finishing houses for selection of the finish provider, cost not being a consideration. The result is a deep black finish with remarkable lubricity. These are assembled to the current military technical data package with permatex'd and properly staked carrier keys. They also feature the current 15,000 round extractor spring design and a Crane O ring for reliable extraction in extreme conditions. We ran these thousands of rounds in multiple manufacturers rifles throughout the T&E phase without a single malfunction. From first sight through months of use to the final product launch we have remained excited to bring this BCG to market. This is the only BCG that has ever excited us and that is why we have chosen to offer it to the people we care about, our customers.
Many Metallurgists consider AISI 9310 alloy steel as an acceptable bolt material and substitute for Carpenter 158 (Carpenters brand name AISI P6 Spec mold steel). However, for the M4 purists we offer our BCG with the optional Carpenter 158 bolt made to current Mil-Spec including phosphate rather than Melonite treatment which comes with the 9310 bolt.
Features:
- 8620 Carrier
- 9310 Bolt MP inspected, High Pressure Tested (Carpenter 158 available)
- Bolt properly heat treated, shot peened, and post heat treat ground with headspace held to half the blueprint specification
- 4340 Cam Pin & Extractor
- Finish Pass Machined on all surfaces
- Full Billet Construction
- Premium Melonite QPQ Finish
- Latest 15k round Extractor Spring Design
- Crane O-ring for increased extraction reliability in extreme conditions
- Billet machined gas key, installed with permatex and staked to current TDP
SN-ACH™
The SN-ACH™ (Suppressor Normalized Ambidextrous Charging Handle) is a patented, modernized, feature filled charging handle that will satisfy any AR15 user. The SN-ACH™ features a gas check groove and a suppressor gas vent that reduces gas in the face of the shooter when using a suppressor. The bolt carrier engaging hook features durable reinforced geometry for 30% increase in strength over milspec handles and approximately 3x as strong as inferior 6061 handles which routinely break under hard use. Fitment bearing surfaces on the handle mating ensures reduced wobble fitment with the Ar15 upper reciever. The handle is made from 7075-T6 aluminum and hard coated for optimal wear resistance.
Features:
- 6061-T6, Type 3 hardcoat anodized
- Fits all standard AR15/M4/M16 family firearms
M² Sights™
Griffin Armament's Micro Modular (M²) Sights offer an industry first, patent pending, modular base plate system that's compatible with Picatinny rail systems. Constructed from QPQ Treated 17-4 and ordnance grade steel, Griffin M2 Sights were designed to be the correct product for every backup sight application.
A shooter can use these durable, low profile sights in a 12 o'clock mounted application while having the flexibility to reconfigure them to ambidextrous 45 degree angle sights using the alternate and available angle plates. This flexibility ensures these sights can be used by anyone and will never end up in a box of undesirable legacy kit. The front A2 sight provides elevation adjustment while ensuring maximum aftermarket support for your favorite post, be it tritium, fiber optic, match grade, or otherwise. An extremely low profile, snag resistant, slotted rear windage screw, affords easy but more importantly secure adjustability.
Robust spring tension of both front and rear flip up assemblies ensures accurate repeatability every time the sight towers are actuated.
Never before has a product in this category offer this degree of flexibility. Griffin M2 Sights have a minimal foot print, and are among the smallest backup sights on the market. For a mere 2 and half ounces your rifle can be equipped with a durable iron sight system, to provide aiming capability in rain, snow, or fog, on or off axis without dependence on batteries or glass.
Features:
- Low profile, minimal foot print iron sight system
- 17-4 stainless steel
- Melonite QPQ treated
- 12 o'clock plates included
- Fasteners included
- A2 sight post compatible
- Compatible with separately available M2 45 Degree Plate Bases (ambidextrous for right or left hand users)
Specs:
- Weight: 2.5 oz.
Choice of furniture color
Options Available:
Additional Details
- SKU:
- MK1PSD300ET3U-W
- Barrel Length (inches):
- 9.5
- Caliber:
- 300 BLK
