Strike Industries AR-Platform Picatinny Stock Adapter - Flat Dark Earth Anodized (ARPSAFDE)

The Strike Industries AR-Platform Picatinny Stock Adapter is a straightforward solution for AR builders who want to run a Picatinny-mounted stock or stabilizer instead of a traditional buffer tube setup. If your upper receiver is self-contained—meaning it doesn't rely on an in-line buffer and spring to cycle—this adapter threads directly into your AR-15 or AR-10 lower receiver where the receiver extension would normally go, giving you fast, budget-conscious flexibility to swap in your choice of folding stocks or stabilizers from the vast aftermarket.

Strike's design threads into the standard 1 3/16"-16 HSS rear receiver thread using a right-hand thread pattern, with a positive anti-loosening detent that stays tactile and secure while keeping your rear takedown pin spring captured. The adapter features a full 1913 Picatinny rail interface with four mounting slots, so you have room to attach optics, lights, or other rail-mounted gear directly to your stock setup. A 360° rotating QD socket is built in, letting you orient your sling attachment to either the left or right side depending on your preferred carry and shooting configuration.

This is the kind of straightforward, no-nonsense part that appeals to AR builders who value modularity and don't want to be locked into a single stock platform. Whether you're building a precision setup, a short-barreled rifle, or experimenting with different stock geometries, the Picatinny Stock Adapter makes it easy to test configurations without swapping lower receivers. The Flat Dark Earth anodized finish blends cleanly with most modern furniture and holds up to field use.

Key Features

• Threads into standard AR receiver extension hole (1 3/16"-16 HSS right-hand thread)
• Compatible with AR-15 and AR-10 lower receivers
• Full 1913 Picatinny rail interface with four slots for accessories
• Positive anti-loosening detent; rear takedown pin spring remains captured
• 360° rotating QD socket—orient left or right for your setup
• Works with most folding stocks and stabilizers on the market
• Flat Dark Earth anodized finish

Specifications

Frequently Asked Questions

Will this adapter work on both AR-15 and AR-10 platforms?

Yes. The Strike Industries Picatinny Stock Adapter is compatible with both AR-15 and AR-10 lower receivers, as long as they use the standard 1 3/16"-16 HSS rear receiver thread.

What stocks and stabilizers can I use with this adapter?

The adapter is compatible with the majority of folding stocks and stabilizers available on the market. Since it uses a standard 1913 Picatinny rail interface, any stock or stabilizer designed to mount to Picatinny rails will work.

Does the adapter keep my rear takedown pin spring in place?

Yes. The design includes an anti-loosening detent that remains positive and tactile while keeping the rear takedown pin spring captured, so you don't lose small parts during installation or removal.

Can I mount accessories on the rail section?

Absolutely. The adapter features a full 1913 Picatinny rail with four mounting slots, giving you the ability to attach optics, lights, and other rail-mounted gear directly to your stock setup.