AR-10 / LR-308 / SR-25

The KynSHOT RB5004 “Shorty” Recoil Buffer is designed for AR-10 carbines with a collapsible stock and an AR-15 length (7.0″) buffer tube which is common on many AR-10 applications.

• Weight: 3.8 Ounces.
• Length when Compressed: 2.5″ and replaces buffers that are 2.5” long.
• Mil-Spec Hydraulic Fluids and Seals – Ambient operating temp certified for -30F – +150F
• DO NOT USE IN 9mm AR-15s. For 9mm AR15s use KynSHOT P/N RB5007, RB5015HD or RB5020SS. See Selection Matrix for proper buffer choice.
• Designed for 7.62mm/.308 cal. AR style rifles with an M4 length buffer tube (which is 7” deep, and ¾” shorter than an Armalite AR-10 collapsible stock tube). This is a common factory stock arrangement on many factory
• .308 rifles such as DPMS, CMMG and many others. The best reference is that it replaces factory buffers that are 2.5″ in length.
• Also works well with other calibers based on the .308 case such as the .338 Federal, .260 Remington and .243 Winchester if they have the M4 buffer tube. If you buy an aftermarket AR-15/M4 collapsible stock tube for your
• .308 AR, this is the buffer you will need. The Magpul UBR stock also uses an AR-15 carbine length stock tube and would also require this buffer if used on a .308 rifle.

The KynSHOT RB5005 Recoil Buffer is designed for AR-10 carbines with a collapsible stock that use the standard AR-10 length tubes that are 7.75″ deep on the inside.

• Weight: 5.0 Ounces.
• Length when Compressed: 3.25”. Replaces buffers that are 3.25″ in length.
• Mil-Spec Hydraulic Fluids and Seals – Ambient operating temp certified for -30F – +150F.
• DO NOT USE IN 9mm AR-15s. For 9mm AR15s use KynSHOT P/N RB5007, RB5015HD, or RB5020SS. See Selection Matrix for proper buffer choice.
• High strength 17-4 Stainless Steel construction throughout the unit, making it virtually impervious to corrosion.
• Designed for 7.62mm/.308 cal. AR-10 type rifles with an AR-10 length collapsible stock buffer tube which is 7 3/4″ long on the inside (AR-15 collapsible buffer tubes are 7″ on the inside). The best way to confirm is to measure the length of the buffer that came with the rifle from the factory.