Description
Getting a sling on your Remington 870 doesn't have to mean drilling into the receiver or hiring a gunsmith. The Uncle Mike's 18012 Mag Cap Swivel Set is a straightforward, factory-style solution built specifically for the 12 gauge Remington 870 and 870 Youth. It gives you both front and rear attachment points using parts that install by hand, so you can carry your shotgun hands-free for hunting, range days, or hauling gear to the blind.
What the Uncle Mike's 18012 Set Brings to the Bench
The heart of this kit is a replacement magazine cap with the swivel base already built in. You simply unscrew your factory cap and thread this one on in its place, no modification to the gun required. For the rear point, the set includes a 3/4" wood screw buttstock swivel base that anchors into the stock. Two 1" Super Swivels round out the package and clip onto any standard 1-inch sling you already own or plan to pick up.
Built the Way Uncle Mike's Swivels Have Always Been
Everything here is steel with a blued finish, so it holds up to real-world carry and matches the traditional look of most 870 setups. The quick-detach design lets you pop the sling off when you don't need it and clip it back on when you do, without the swivel body grinding against your finish. It's the kind of no-nonsense hardware Uncle Mike's has been making since they pioneered the modern swivel decades ago.
One thing worth knowing before you order: this set is made for standard Remington 870 models using the conventional ball and detent lug system. It is not intended for 3.5" magnum 870 configurations, so double-check your shotgun if you run the heavy magnum loads. For everyone else running a standard 12 gauge 870 or the Youth model, this is about as clean and painless as sling mounting gets.
Key Specifications
- Manufacturer: Uncle Mike's
- Manufacturer Part Number: 18012
- Model: Quick Detach Mag Cap & Wood Screw
- UPC: 043699180127
- Gauge: 12 Gauge
- Fits: Remington 870 & 870 Youth
- Loop Size: 1 inch
- Style: Shotgun Swivel / Quick Detach
- Material: Steel
- Finish: Blued
- Color: Black
- Buttstock Base: 3/4" wood screw
- Attachment System: Conventional ball and detent lug
- Warranty: Limited lifetime
What’s Included
- Replacement magazine cap with integrated swivel base
- 3/4" wood screw buttstock swivel base
- Two 1" Super Swivels
Frequently Asked Questions
Will this Uncle Mike's 18012 set fit my Remington 870?
It's built for the 12 gauge Remington 870 and 870 Youth models that use the conventional ball and detent lug system. The magazine cap threads directly onto standard 870 configurations. Note that it is not intended for 3.5" magnum 870 shotguns, so verify your model before ordering if you run heavy magnum loads.
Do I need any tools or gunsmithing to install it?
No gunsmithing required. The front swivel comes as a replacement magazine cap, so you just unscrew your factory cap and thread this one on by hand. The rear buttstock base is a wood screw that you install into the stock, so a screwdriver is all you'll need back there.
Does this swivel set come with a sling?
No, the sling is sold separately. This kit provides the mounting hardware, the front and rear swivel bases plus two Super Swivels, which accept any standard 1-inch sling. That lets you choose whatever sling style and padding you prefer.
What does the quick detach feature actually do for me?
The quick-detach Super Swivels let you pop your sling on and off the shotgun in seconds without unthreading anything. The design also keeps the metal swivel body from rubbing directly against your gun's finish. It's handy when you want the sling off for shooting or storage and back on for carry.



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