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Ar-15 Stock Assy Collapsible Mil-Spec - Brn Ar-15 Mil-Spec Collapsible Stock Assembly Black
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$69.53
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SKU: 080000941
Overview
This collapsible stock assembly is built for AR-15 and carbine setups where adjustable length of pull matters, especially for shooters who need a more adaptable fit or wear body armor. It comes as a ready-to-install package for standard AR-15 lower receivers, with the buffer tube, receiver lock plate, lock nut, recoil spring, buffer, and a toe-mounted steel sling loop included. The buttstock uses fiberglass-reinforced, injection-molded nylon and a matte black finish, offering a practical, hard-use configuration without unnecessary bulk. Its six-position adjustment gives the rifle a more flexible setup for range use, training, or field carry, while the mil-spec receiver extension keeps it oriented toward standard carbine builds.
Why Hunters Choose the Brownells
Six-position Length-of-pull
Adjustment helps fit different shooters
Ready Install
On standard AR-15 rifle or
Includes Buffer
Tube, receiver lock plate, lock
Toe-mounted Steel
Sling loop adds a secure
Fiberglass-reinforced Nylon
Construction is specified to resist
Key Features
- Six-position length-of-pull adjustment for different-size shooters, including those wearing body armor.
- Ready to install on standard AR-15 rifle or carbine lower receivers.
- Includes buffer tube, receiver lock plate, lock nut, recoil spring, and buffer.
- Toe-mounted steel sling loop is included for sling attachment.
- Fiberglass-reinforced, injection-molded nylon buttstock in matte black.
- Mil-Spec receiver extension with nominal 1.14-inch outside diameter.
Best Used For
- AR-15 owners needing a ready-to-install collapsible stock assembly for a standard lower receiver
- Shooters wanting six-position length-of-pull adjustment for different body sizes or layered clothing
- Users who may wear body armor and need a more adaptable carbine stock setup
- Hunters or range shooters looking for a compact collapsed profile with included buffer components
- Those wanting a matte-black mil-spec stock assembly with an integrated sling loop
Specifications
| Blade Finish | Matte black |
|---|---|
| Color | Black |
| Compatibility | Any standard AR-15 rifle or carbine lower receiver |
| Included Components | Buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring, buffer |
| Length Of Pull Adjustment | Six-position |
| Lock Nut | Steel lock nut with four square notches and pre-cut detents for staking to lock plate |
| Material | Aluminum and fiberglass-reinforced, injection-molded nylon |
| Oal Collapsed | 8 3/4" (22.2cm) |
| Oal Fully Extended | 11 3/4" (29.9cm) |
| Receiver Extension | Mil-Spec (nominal 1.14" O.D.) |
| Sling Loop | Toe-mounted steel sling loop |
| Type | Collapsible buttstock assembly |
Pros
- Six-position length-of-pull adjustment helps fit different shooters and body armor use.
- Ready to install on standard AR-15 rifle or carbine lower receivers.
- Includes buffer tube, receiver lock plate, lock nut, spring, and buffer.
- Toe-mounted steel sling loop adds a secure attachment point for a sling.
- Fiberglass-reinforced nylon construction is specified to resist impact, heat, moisture, and cold.
Considerations & Trade-offs
- Six-position length-of-pull adjustment adds flexibility, but it also means the stock is more complex than a fixed option and requires proper setup on a standard AR-15/carbine lower receiver.
- The assembly is described as Mil-Spec with a nominal 1.14" O.D. receiver extension, so fit depends on matching the correct receiver extension standard.
- It includes the buffer tube, receiver lock plate, lock nut, recoil spring, and buffer, which is convenient for installation but may duplicate parts if you already have compatible components.
- The buttstock is matte black only, so there is no color or finish variation mentioned in the provided data.
Suggested Comparisons
- AR-15 buffer tube and stock assemblies
- Mil-spec AR-15 carbine stocks
- AR-15 lower receiver furniture
- Adjustable rifle stocks
Suggested Accessories
- AR-15 buffer tube kit
- AR-15 lower receiver parts kit
- AR-15 sling
- AR-15 recoil spring and buffer
Frequently Asked Questions
What rifles or lowers is this stock assembly intended for?
It is ready to install on any standard AR-15 rifle or carbine lower receiver.
Does this stock assembly include the parts needed for installation?
Yes. The listed components include the buffer tube, receiver lock plate, lock nut, toe-mounted steel sling loop, carbine recoil spring, and buffer.
How many length-of-pull positions does it offer?
It provides six-position length-of-pull adjustment.
What material is the buttstock made from?
The buttstock is made from fiberglass-reinforced, injection-molded nylon. The provided specs also list aluminum and fiberglass-reinforced, injection-molded nylon in matte black.
What are the collapsed and extended overall lengths?
The listed overall length is 8 3/4 inches collapsed and 11 3/4 inches fully extended.