For .308 ARs with Extended Receiver Extensions:
XH Carbine Buffer - 8.5 ounces - $135
This Xtra-Heavy buffer is the heaviest standard carbine length buffer on the market. At 8.5 oz it weighs nearly three times as much as OEM AR15 carbine buffers.
Machined from solid 303 Stainless Steel with Tungsten anti-bounce internal weights. Includes a Stainless Steel roll pin for a lifetime of trouble-free performance.
This is the BEST buffer/spring combo if you have an extended (7⅝" deep) receiver extension on your large-frame AR, like a VLTOR A5 tube/clone or a Magpul UBR Gen2 stock. Most better .308 rifles come from the factory in this configuration - LMT, S&W, LaRue, POF, etc. Absolutely the most reliable setup for any AR-10 with a carbine/collapsable stock.
If you have any doubt, please measure your current buffer and check the inside depth of your buffer tube.
These products are a drop-in upgrade if you have 3¼" long buffer and your tube is 7⅝" deep.
Please note that all .308 rifle buffer springs are not created equal. We strongly encourage using the ArmaLite #EA1095 buffer spring listed here. Using other buffer springs is very likely to cause reliability issues. We do not recommend using flat-wire springs for any application.
Email us before ordering if you have any questions.
DO NOT USE an XH Carbine Buffer in any large-frame gun with a standard AR-15 carbine buffer tube! Damage/injury/mayhem will result.
A5 Buffer Tubes are also in stock: Click Here
CAR-10 XH Buffer - 6.5 ounces - $135
Extra-Heavy model for suppressed weapons, or for maximum recoil reduction in non-suppressed guns.
This product is specifically recommended by Magpul for use with their carbine stocks on .308 ARs. CAR-10 XH buffers work great with any using a standard 7" carbine buffer tube.
CAR-10 XH buffers are shorter and heavier than standard carbine buffers. Constructed of 303 Stainless Steel with reciprocating Tungsten anti-bounce internal weights.
Heavy Buffers reduce felt recoil for the shooter, and minimize wear and tear on the gun. Many customers have reported that installing a CAR-10 XH buffer significantly increased the reliability of their weapon.
We recommend using our custom .308 Carbine Buffer Springs with these buffers. These springs are manufactured specifically for use with CAR-10/CAR-10 XH buffers. OEM springs and lesser aftermarket springs (including Sprinco ROYGBIV) may cause malfunctions. 'Flat-Wire' springs are not recommended for any application.
Includes a Stainless Steel roll pin for a lifetime of trouble-free performance.
Note: Not compatible with AR-15s! This buffer is only for use in .308 ARs with a standard 7" deep AR-15 carbine receiver extension (buffer tube).
DO NOT USE A CAR-10 XH buffer in any gun with an A5 buffer tube! Damage/injury/mayhem will result.
If you have an ArmaLite/VLTOR A5 extended length tube (7⅝"deep) or a Magpul UBR Gen2 stock I recommend an XH Carbine Buffer.