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The B5 Systems Collapsible Precision Stock, or CPS, is what happens when you take the rock-solid feel of a fixed precision stock and give it the on-the-fly adjustability of a standard carbine stock. It slides right onto a mil-spec carbine receiver extension, so there's no swapping out your buffer tube, spring, or buffer weight just to get a stock that actually helps you shoot better. If you've ever fought a wobbly, one-size-fits-nobody stock while trying to get behind your optic, this one solves that problem in a hurry.
The whole point of this stock is repeatability. The wide cheek rest is elevation adjustable with a positive-click dial, so you can bring your eye up to line up perfectly with a magnified optic and get the same cheek weld shot after shot. The cushioned, no-slip buttpad also adjusts to fine-tune your length of pull. Twelve internal tensioners squeeze against the buffer tube to kill any rattle, which is a big reason folks who upgrade from other polymer stocks notice how planted this thing feels through a full day of shooting.
B5 offers this stock in a few cheek-rest lengths, and the Medium is the one built for standard AR-15 rifles. The cheekpiece sits far enough back that the stock will clear your charging handle even when fully collapsed, so you never have to work around it during manipulations. If you're running a Law Tactical folder or a side-charging setup, that's where the Long version comes in, but for a typical carbine, Medium is the sweet spot.
Sling setup is flexible thanks to ambidextrous fixed sling loops plus steel anti-rotation QD sling cups on both sides. There's also an underside M-LOK slot for adding a monopod or other accessory. Installation is about as easy as it gets: pull the gross-adjustment lever down, slide it onto the tube, and flip the lockout to keep the stock captive so it can't pop off at full extension. Made from durable polymer with color-matched machined hardware, it's a function-over-flash upgrade that earns its keep.
No, the CPS is the stock only and does not include a receiver extension, buffer, or spring. It's designed to slide onto your existing mil-spec carbine buffer tube, so you can keep your current setup as-is. If you're building from scratch, you'll need to source a mil-spec carbine buffer tube kit separately.
Yes, that's exactly what the Medium length is built for. The cheekpiece is positioned rearward so the stock clears the charging handle on a standard AR-15 even at the fully collapsed position. If you run a Law Tactical folder or a side charger, you'd want the Long version instead.
Installation takes just a few seconds and requires no tools. You pull down the gross-adjustment lever, slide the stock onto the buffer tube, and set it where you want. There's also a lockout slider that keeps the stock captive so it won't pull off when fully extended.
The CPS uses internal tensioners that press against the buffer tube to eliminate play and rattle. That snug fit is why many folks upgrading from other polymer stocks say this one feels far more solid and stays steady through a long day of shooting. The fit can be tight out of the box, which is by design for that zero-wobble feel.
| UPC | 814927022201 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CPS-1304 |
| Color | Black |
| Length | 10 |
| Model | |
| Product Type | Stock |
| Shipping Weight | 1.45 |
| Style | Collapsible |
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