Ridgeline Defense RD15-LPR Upper Receiver (R)

Includes: Bolt Carrier Group (DLC Coated) / Charging Handle (Geissele Super Charging Handle) / A2 Flash Hider (No Pin & Weld)

For shooters, by shooters, the RD15 Light Precision Rifle was born.

The RD15’s 7075 T6 Billet Aluminum upper receiver is elongated to provide more available mounting space for proper eye relief with a variety of optics and utilizes a semi-monolithic design where the handguard attaches to upper receiver itself and not the barrel nut, eliminating positional shift. It is finished in Type 3 Hard Coat Anodizing.

The handguard was specifically designed with ergonomics, mounting options, and wobble zone in mind. The handguard features full length RRS-Lock ARCA on the 6 o’clock with integrated MLOK slots. It also features MLOK on the 1,3,9, and 11 o’clock, with T-slot marked M1913 Picatinny running the entire length of the 12 o’clock. All of this while still maintaining an Outer Diameter (OD) of 1.58” wide and 2.0” tall, giving it the ergonomics of a fast-handling carbine. The full-length ARCA allows the gun to eliminate lateral wobble when shooting from barricades, bags, or supports, and it easily mounts to tripod, bipods and other ARCA accessories.

Our barrels are manufactured to our specifications by PROOF Research utilizing a 416R Stainless Steel Blank. They feature 1:7 Right Hand twist, chambered in .223 Wylde, and an intermediate-length gas system. They are thermally bedded into the upper receiver utilizing a proprietary installation process.

Our gas block features an indexing tab and dual-taper attachment method utilizing a jam-nut that threads on to the barrel itself, negating the use of set screws or pins drilled counter to the gas port.  This method allows us to hold very tight tolerances as the system becomes completely sealed, unlike a standard gas block that must be “pulled” down and into contact with the gas journal.  This ensures that when the system becomes pressurized during firing, and even more so with suppressor use, we have a consistent amount of gas shot after shot.  Furthermore, we utilize heat-treated 17-4 stainless steel with our stainless barrels to best match the thermal properties of the competing parts.

The RD15 Bolt is a Full-Auto Rated Mil Spec Carpenter 158 bolt that has been Magnetic Particle Inspected and High Pressure Treated. The carrier key is chrome lined, heat treated, gauged and properly staked in accordance with USGI specifications. The bolt and carrier are Diamond Like Coated for easy cleaning after prolonged suppressed fire. Every bolt is matched to its individual barrel during the Quality Control and Inspection process.

The RD15 LPR Upper Receiver is now available as a stand-alone product specifically at the request of our friends behind enemy lines in banned states.

Receiver:

• 7075 T6 Billet
• Semi-Monolithic Design
• Type 3 Hardcoat Anodizing

Handguard:

• 12 o’clock T-Slot engraved M1913 Picatinny
• 1,3,9,11 o’clock MLOK
• 6 o’clock Full Length RRS-Lock ARCA/MLOK

Barrel:

• PROOF Research 416 Stainless Blank
• Cut Rifling featuring 1:7 Twist
• .223 Wylde Chamber
• Ridgeline SDM Profile
• 16” Intermediate Gas Available now

Bolt:

• Full Auto Rated and Staked BCG
• Polished DLC (Diamond Like Coating) Carpenter 158
• MPI (Magnetic Particle Inspected)
• HPT (High Pressure Tested)

Gas System:

• Intermediate Length Gas System
• Proprietary Heat Treated 17-4 Stainless Gas Block
• Dual Taper with Jam Nut for consistent gas flow

LPR Upper Receivers are made to the tightest specifications. Fitting it to your upper receiver lugs into your lower receiver may be tight due to other manufacturer’s tolerances.

UPS SHIPPING OPTIONS ONLY. No $7.95 Flat Rate for this item. This is to properly insure it.

This Item is Excluded from All Coupon Codes.

Warranty: This rifle was not built to be a safe queen. The RD-15 LPR was made to be a tool built for warfighters, by warfighters. We back our product with a Limited Lifetime Warranty against any and all defects in your rifle caused by us or our design because if we are given the chance to fix it, we are given a chance to improve it.