
Availability: In Stock
The B5 Systems Precision Stock Collapsible in gray (long version) is built for AR-15 shooters who demand a cheekweld that actually works and the adjustability to dial in the perfect fit. This isn't a one-size-fits-all tube: it combines a proven cheek profile refined from B5's SOPMOD and Bravo lineage with independent adjustable cheekpiece and buttpad tuning, so you can fine-tune your sight picture and shoulder pocket without buying multiple stocks. Made in the USA to Mil-Spec standards, it fits standard carbine receiver extensions (M4, A5, M110K) and is particularly popular with shooters running side-charging uppers or LAW tactical side-folding adapters.
The long length accommodates a full range of shooter builds and provides the gross pull-down length adjustment most field users prefer over fixed positions. Ten internal tensioners eliminate rattle and creep—you get a rock-solid cheekweld, not a sloppy platform. The stock bristles with practical mounting: fixed and steel quick-disconnect sling attachment points on each side, an M-LOK slot on the underside for lights or other accessories, and a no-slip cushioned buttpad that won't migrate. Lockout lever prevents accidental adjustment during the day, and all hardware is color-matched to the gray finish.
Whether you're dialing in a precision rifle, running a duty setup, or building a side-charger, this stock rewards the time you invest in getting the fit right. It's a tool for shooters who understand that a proper cheekweld is part of your shooting system, not just cosmetic.
| Brand | B5 Systems |
| Model | Precision Stock Collapsible (CPS), Long |
| Color | Gray |
| Length | 8.5 inches |
| Width | 2.00 inches |
| Height | 4.35 inches |
| Weight | 20.65 oz |
| Receiver Extension Compatibility | Mil-Spec carbine (M4, A5, M110K) |
| Internal Tensioners | 10 |
| Country of Origin | USA |
Yes, if your rifle has a Mil-Spec carbine receiver extension. The Precision Stock works with M4, A5, and M110K extension tubes. If you're unsure what you have, measure the buffer tube diameter—Mil-Spec is standard on most AR-15s.
The long length gives you a wider range of adjustment via the pull-down lever and suits most shooter builds and body types. It's the preferred choice for side-charging uppers and rifles using LAW tactical folding adapters.
Yes. Both the cheekpiece and buttpad feature adjustable dials, allowing you to dial in your cheekweld and shoulder pocket separately. This level of customization helps you achieve consistent sight picture and comfort across different shooting positions and gear setups.
The stock includes both fixed sling mounts and steel quick-disconnect (QD) sling attachment points, giving you flexibility in how you rig your rifle.

SKU: 167527750 • Weight: 1.5oz





Availability: In Stock
The B5 Systems Precision Stock Collapsible in gray (long version) is built for AR-15 shooters who demand a cheekweld that actually works and the adjustability to dial in the perfect fit. This isn't a one-size-fits-all tube: it combines a proven cheek profile refined from B5's SOPMOD and Bravo lineage with independent adjustable cheekpiece and buttpad tuning, so you can fine-tune your sight picture and shoulder pocket without buying multiple stocks. Made in the USA to Mil-Spec standards, it fits standard carbine receiver extensions (M4, A5, M110K) and is particularly popular with shooters running side-charging uppers or LAW tactical side-folding adapters.
The long length accommodates a full range of shooter builds and provides the gross pull-down length adjustment most field users prefer over fixed positions. Ten internal tensioners eliminate rattle and creep—you get a rock-solid cheekweld, not a sloppy platform. The stock bristles with practical mounting: fixed and steel quick-disconnect sling attachment points on each side, an M-LOK slot on the underside for lights or other accessories, and a no-slip cushioned buttpad that won't migrate. Lockout lever prevents accidental adjustment during the day, and all hardware is color-matched to the gray finish.
Whether you're dialing in a precision rifle, running a duty setup, or building a side-charger, this stock rewards the time you invest in getting the fit right. It's a tool for shooters who understand that a proper cheekweld is part of your shooting system, not just cosmetic.
| Brand | B5 Systems |
| Model | Precision Stock Collapsible (CPS), Long |
| Color | Gray |
| Length | 8.5 inches |
| Width | 2.00 inches |
| Height | 4.35 inches |
| Weight | 20.65 oz |
| Receiver Extension Compatibility | Mil-Spec carbine (M4, A5, M110K) |
| Internal Tensioners | 10 |
| Country of Origin | USA |
Yes, if your rifle has a Mil-Spec carbine receiver extension. The Precision Stock works with M4, A5, and M110K extension tubes. If you're unsure what you have, measure the buffer tube diameter—Mil-Spec is standard on most AR-15s.
The long length gives you a wider range of adjustment via the pull-down lever and suits most shooter builds and body types. It's the preferred choice for side-charging uppers and rifles using LAW tactical folding adapters.
Yes. Both the cheekpiece and buttpad feature adjustable dials, allowing you to dial in your cheekweld and shoulder pocket separately. This level of customization helps you achieve consistent sight picture and comfort across different shooting positions and gear setups.
The stock includes both fixed sling mounts and steel quick-disconnect (QD) sling attachment points, giving you flexibility in how you rig your rifle.
SKU: 167527750 • Weight: 1.5oz
