SAG AR Buttstock Adapter – AR Stock Compatibility for Side-Folding Sporting Platforms

The SAG AR Buttstock Adapter (S20009) by Sureshot Armament Group lets you mount any AR-pattern stock on side-folding sporting platforms built with a 5.5mm rear trunnion. CNC-milled from high-strength aluminum alloy, it brings the ergonomics and adjustability of an AR buffer tube to a classic sporting platform – ideal for IPSC, PCC, and precision sport shooting setups.

Engineered to host both Mil-SPEC and Comm-SPEC AR stocks (Comm-SPEC seats as a loose fit), the adapter features two QD sling sockets at the 3 and 9 o'clock positions, an integrated paracord loop, and machined relief slots for civilian stock locking devices. The adapter tube axis is raised 7mm for an improved cheek-to-sight relationship.

Technical Specifications

Compatibility

Designed for side-folding sporting platforms built on a 5.5mm rear trunnion with a standard side-folding stock unit. See the compatibility filter on this page to confirm fitment for your specific platform.

What's Included

• (1) SAG AR Buttstock Adapter
• (1) Installation Manual

FAQ

Q: Which AR stocks fit this adapter?
A: Both Mil-SPEC and Comm-SPEC AR-pattern stocks. Comm-SPEC tubes seat with a slightly loose fit.

Q: What trunnion does my platform need?
A: The S20009 is designed for side-folding sporting platforms with a 5.5mm rear trunnion.

Q: Does it support QD sling swivels?
A: Yes – two QD sockets, at the 3 and 9 o'clock positions.

Q: Why is the axis raised 7mm?
A: The raised tube axis improves the cheek-to-sight relationship for a more comfortable, repeatable shooting position.

Q: How does shipping work?
A: US orders are fulfilled and delivered through our partner's domestic US logistics network. Delivery is not express, but it is reliable and fully guaranteed.