Build your next AR-15 with a premium stripped upper receiver and free-float handguard combination. This combo includes a precision machined AR-15/M4 stripped upper receiver made from a 7075-T6 forged aluminum blank paired with a rugged 13.7″ M-LOK free float handguard featuring an advanced wedge-lock mounting system for exceptional strength, rigidity, and reliability.
Designed with suppressor-ready builds in mind, the 13.7″ length pairs perfectly with popular 13.7″, 13.9″, 14.5″, and 16″ barrel configurations while providing clearance for many quick-attach suppressor mounting systems.
Looking for additional components? Complete your build with one of our AR-15 barrels, bolt carrier groups, charging handles, gas systems, and lower parts kits.
Included Components
AR-15 / M4 Stripped Upper Receiver
- Precision machined from 7075-T6 forged aluminum
- Mil-Spec Type III hard coat anodized black finish
- M4 feed ramps
- Compatible with standard AR-15 components
- Fits Mil-Spec AR-15 lower receivers
- Supports a wide variety of AR-15 caliber configurations when assembled with the appropriate barrel and bolt carrier group
- Forward assist and ejection port cover not installed
13.7″ Free Float M-LOK Handguard
This lightweight handguard utilizes an advanced two-piece wedge block locking system that applies equal pressure around the entire barrel nut. Unlike traditional clamp-on rails that concentrate force at only a few points, the wedge system distributes clamping pressure evenly around the barrel nut for a significantly stronger attachment.
The result is improved rigidity, enhanced barrel harmonics, and excellent resistance to flex when using slings, barricades, bipods, or other accessories that place pressure on the front of the handguard. This secure mounting system helps maintain alignment and provides confidence when running hard-use rifle setups.
Large skeletonized cutouts reduce weight while promoting airflow and barrel cooling without sacrificing structural integrity. All edges are chamfered and the handguard is finished with a Mil-Spec Type III hard coat anodized finish for durability and a smooth feel.
Features
- Precision machined 7075-T6 forged upper receiver
- Free float handguard design for improved accuracy potential
- Advanced two-piece wedge-lock mounting system
- Equal pressure around barrel nut for superior rigidity
- Rock-solid attachment minimizes movement under load
- Aircraft-grade 6061-T6 aluminum handguard and wedge blocks
- Mil-Spec Type III Class 2 hard coat anodized finish
- Lightweight skeletonized construction
- Large ventilation cutouts for improved cooling
- Slim-line ergonomic profile
- Full-length Picatinny top rail
- Magpul® M-LOK compatible mounting system
- High-strength coated steel barrel nut included
- Compatible with forged and billet AR-15 upper receivers
- Supports a wide range of AR-15 caliber configurations
- Made in the USA
Specifications
Upper Receiver
- Material: 7075-T6 Forged Aluminum
- Finish: Black Type III Hard Coat Anodized
- Feed Ramps: M4
- Compatibility: Standard AR-15 Components
Handguard
- Length: 13.7″
- Weight with Barrel Nut: 12.7 oz
- Barrel Nut Weight: 3.1 oz
- Inside Diameter (ID): 1.375″
- Front Outside Diameter (OD): 1.605″
- ID + Top Gas Tube Channel: 1.73″
- Gas Tube Channel Width: 0.475″
- Gas Block Compatibility: Low Profile & Adjustable Low Profile Gas Blocks
- Barrel Nut Wrench Size: 1-1/4″
- Color: Black
Installation Instructions
Torque barrel nut to 40 ft pounds
Anti-Seize on the barrel nut is not necessary but recommended
Line the handguard top rail to the AR upper receiver rail for a seamless fit
Install wedges and torque two 10/32 bolts to 40 inch pounds
Complete Your Build
- AR-15 Barrels
- Bolt Carrier Groups (BCGs)
- Charging Handles
- Gas Blocks & Gas Tubes
- Muzzle Devices
- Lower Parts Kits
- AR-15 Build Kits
Whether you’re building a suppressor-ready rifle, lightweight carbine, duty-style setup, or custom AR-15 project, this stripped upper receiver and 13.7″ M-LOK handguard combo provides a durable, lightweight foundation with a secure wedge-lock mounting system designed for long-term performance.
sound of freedom – This was a great set up. I loved being able to customize the set up. Only issue I had was my own fault as a newb to building these. I used a heavy barrel in a slim hand guard. It makes adding attachments tough with clearances. Hoping someday to also get an AR10 from here.