$55.00 $90.00-38.89%
  • Brand: Freedom Forge Armory
  • SKU: SLMK5M4
  • Shipping: 
  • Return Policy: We want you to be satisfied with your purchase. If you need to return merchandise within the first 14 days of delivery please follow the steps outlined below. Returns after 14 days will not be accepted. **Please note that firearm purchases that are accepted from the transferring FFL are considered used firearms and returns will NOT be guaranteed. Inspect it BEFORE accepting the transfer. All sales are final on special orders, products sold "as is" or "used" or that have been installed or used after receipt. **NFA items, custom firearms, electronic sights and optics, ammunition. Unless received defective, these items are not returnable or refundable. Call us at 804-869-8960 or send your request for a return to to obtain authorization. No returns of merchandise will be accepted without prior authorization. All returns on orders paid by a credit card will receive a credit to the card used on the purchase (or store credit at our discretion) once confirmation of receipt of merchandise has been made and inspection has been completed. Depending on your financial institution, refunds are credited between 3 to 5 business days after issuance. All cancelled orders that paid with a money order or cashier's check will have the refund issued as store credit. To qualify for a refund on an item that is not defective, all returned merchandise must include the following: The merchandise must be in the original packaging. The merchandise must be unused. Products showing use will not be refunded or exchanged. Include the following in package: A copy of your original invoice and packing slip The reason for your returned merchandise. All return merchandise shipments must be pre-paid, no COD. You must send your returned merchandise using either UPS, FedEx, or USPS according to their restrictions and provide us with tracking information. You must obtain a Return Authorization PRIOR to returning the item by contacting Freedom Forge Armory LLC at 804-869-8960 or Please ship your returned item to: Freedom Forge Armory LLC Attn: Returns. 7400 Brandy Creek Dr. Mechanicsville, VA 23111 Upon receiving your package, and verification of the item is made, you will receive an e-mail with the status. This process can take up to a few weeks from start to finish. Please Note: You will be responsible for covering the Shipping Fee on returned merchandise that is not-defective. A 20% Restocking Fee will apply to any returned merchandise. Firearms that are not defective and in the possession of your FFL will have a 20% Restocking Fee AND a shipping charge deducted from your refund. Any variance to this policy may result in no refund or a partial refund.

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Our semi-auto JR-15 Joint Rifle Mk 5 Mod 4 lower receiver is machined from a 7075-T6 aluminum forging to mil-spec dimensions for precise fit and outstanding performance. This is the same receiver that's used in production of the Mk 5 Mod 4 Joint Rifle. Finished with a KG Gunkote finish that resists scuffs, scratches, and wear. Engraved selector position markings notify operator when weapon is in safe (SAFE) or semi-auto (SEMI). A full-auto position (AUTO) is marked on the receiver but is not selectable. (Please see note below regarding receiver markings) Magazine well features the Freedom Forge Armory logo, Mk5 Mod 4 Joint Rifle markings, and 5.56MM caliber engraving. The Mk 5 Mod 4 stripped lower comes as a standalone component without trigger group, mag release, selector, or bolt release. Stripped lower receivers are finished in KG Gunkote Anodized Black.

*Due to the current high demand for 7075-T6 aluminum we have had to source raw billets from multiple foundry's. All lower receivers conform to Freedom Forge Armory internal dimensional tolerances but may look slightly different externally. This includes fire control markings. Some will be marked SAFE, SEMI, AUTO. Others will be marked SAFE, FIRE.  

This product requires a FFL to be on file to be shipped. If we don't have a FFL for your order, it will not be shipped until an FFL is received. You must be 18 years of age or older except in states that require an individual to be 21 to purchase rifles and shotguns, also 21 years of age or older to purchase handguns, receivers, and suppressors. Virginia residents, you must be 21 years of age to purchase a lower receiver and a lower receiver is subject to the "one gun a month" law if you do not have a valid Virginia Concealed Handgun Permit.