AR Folding Stock Adapter, GEN-S
Adapter that fits between an AR-15 lower receiver and a standard A2, carbine, mil-spec or commercial buffer tube, letting the stock fold to the side for low-profile transport with a one-button release. Works with direct impingement or gas piston uppers and any standard bolt carrier group, full auto or semi auto, 5.56 to .308. The rear face is machined to the same specification as a standard AR lower receiver extension thread, so any compatible buffer tube and stock installs behind it unchanged. CNC-machined 17-4 steel housing with a DLC coating and a 14-7 stainless bolt carrier extension; adds about 1.3 in to length of pull. Includes an integrated single-point sling attachment.

- Category
- Adapter
- Manufacturer
- Law Tactical
- Weight
- 266 g
- Mounts at
- Rear
Specification
Everything measured
IdentityWhat it is and who made it.
- Category
- Adapter
- Manufacturer
- Law Tactical
- Model number
- 99312
- Factory part
- No
Dimensions
- Weight
- 266 g
FitmentThe interface it offers and the one it needs, rather than a list of guns it claims to fit.
- Mounts at
- RearThe back of the receiver, where a stock, a brace or a buffer tube attaches.
AR-15 lower receiver extension thread (1-3/16-16), for stocks and braces that ship their own tubestock:ar-lower-receiver-thread- AR-15 lower receiver extension thread (1-3/16-16), for stocks and braces that ship their own tube
stock:ar-lower-receiver-thread
Needs
Offers
ProvenanceEvery figure above was taken from one of these pages. The confidence reflects how much of the record came from a page a claim can be checked against.
Confidence in this record
85%
Stockists
Where to buy
Offers link straight to the shop. GunSpec never takes the order.
No shop has listed this part yet
Stock and prices come from the shops themselves. If you sell this part, you can list it and it appears here.
List a partCompatibility
Which firearms take this part
Studio
Every firearm this threads onto, resolved
Not a list the maker typed out: the answer comes from the interface this part needs and the mounts each firearm exposes, so it stays right when either one changes.
- The reverse lookup on every part in the catalogue
- Interface standards, platforms and fit overrides
- The same answers through the API and the MCP server
Requires a signed-in GunSpec account on the Studio plan. The answer is computed per firearm, so it is not part of the public record.
API
The call that returns this record
The same fields, in the same units, from the same endpoint the page reads.
curl --request GET \ --url 'https://api.gunspec.io/v1/attachments/law-tactical-folding-stock-adapter-gen-s' \ --header 'X-API-Key: your_key'{ "id": "law-tactical-folding-stock-adapter-gen-s", "name": "AR Folding Stock Adapter, GEN-S", "category": "adapter", "manufacturer": { "id": "law-tactical", "name": "Law Tactical" }, "weight_g": 266, "length_mm": null, "requires_position": "rear", "provides": [ { "id": "stock:ar-lower-receiver-thread", "name": "AR-15 lower receiver extension thread (1-3/16-16), for stocks and braces that ship their own tube", "kind": "stock_mount", "position": null } ], "requires": [ [ { "id": "stock:ar-lower-receiver-thread", "name": "AR-15 lower receiver extension thread (1-3/16-16), for stocks and braces that ship their own tube", "kind": "stock_mount" } ] ]}