$65.99
12 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Building a .308 AR is a different animal than an AR-15, and the buffer is where a lot of builders trip up. The receiver and bolt on a large-frame gun are longer to make room for the .308 cartridge, so the bolt carrier needs more room to travel to the rear. Drop in an AR-15 carbine buffer and your rifle simply won't cycle right. This Luth-AR AR-308 Carbine Buffer Body is machined to the correct length and weight to keep everything moving the way the platform was designed to.
At 3.8 oz with a steel body, this buffer sits at the standard weight for a .308 carbine setup, which is a proven starting point for the most common builds running a carbine-length tube. The weight and length work together with your buffer spring to control bolt speed, soften felt recoil, and cut down on bolt bounce so your rounds feed and eject cleanly. Get the buffer right and the whole rifle runs smoother, wears less, and lasts longer.
This one is made for AR-10, LR-308, and SR-25 pattern rifles running a standard carbine receiver extension. It's a true drop-in part with no fitting or modification needed. If you're assembling a lower or swapping out a mismatched buffer that's giving you cycling headaches, this puts you back on the right track. Keep in mind it does not fit AR-15 rifles, since the bolt travel and weight requirements are different.
Luth-AR comes from Randy Luth, the founder of DPMS Panther Arms, so there's decades of large-frame AR experience behind these parts. The DPMS-pattern lineage matters here because that's the exact style of .308 build most folks are running when they call something an "AR-10." Pair this buffer with a matching .308 carbine buffer spring and you've got a recoil assembly ready to run.
No, this buffer is built specifically for large-frame .308 rifles. The bolt on an AR-10, LR-308, or SR-25 is longer and needs more travel, so the buffer length and weight differ from an AR-15 carbine buffer. Running the wrong buffer in either platform leads to cycling problems, so keep this one on your .308 build.
It's designed for AR-10, LR-308, and SR-25 pattern rifles that use a standard carbine buffer tube. Most guns people casually call an "AR-10" are actually DPMS-pattern LR-308 builds, which is exactly what this Luth-AR buffer is made for. It drops right in with no fitting required.
You'll want a .308 carbine buffer spring to complete the recoil assembly. The buffer weight and spring work together to control bolt speed and felt recoil, so pairing them correctly is what gets your rifle cycling reliably. If your current setup came with a matched spring that's in good shape, this buffer will pair right up with it.
For a .308 running a carbine-length tube, 3.8 oz is the standard starting weight and works well for the most common setups. Some builders go heavier to slow the bolt on an over-gassed gun, but 3.8 oz is a solid baseline. If your rifle is cycling cleanly with this weight, there's no reason to chase anything different.
| UPC | 859819007294 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 308-CS-10B |
| Product Type | Buffer |
You must be logged in to post a review.
Reviews
There are no reviews yet.