Kynshot Hydraulic Recoil Buffer

SPECIFICATIONS

• Weight 4.8 Ounces
• Length when compressed 3.25”
• Designed for hard cycling .223/5.56mm AR15 Carbines
• DO NOT USE IN 9mm AR-15s (Except in specific applications, please consult factory). For 9mm AR15s use KynSHOT P/N RB5007, RB5015HD or RB5020SS. See Selection Matrix for proper buffer choice.
• Mil-Spec Hydraulic Fluids and Seals- Ambient operating temp certified for -30F - +150F
• High strength 17-4 Stainless Steel construction throughout the unit, making it virtually impervious to corrosion.
• Can be used on multiple AR15 calibers, please contact us to verify your application.

The KynSHOT RB5001 Recoil Buffer is engineered for fixed stock AR-15 rifles and is trusted by civilian competition shooters, law enforcement, and the U.S. military. Featuring patented hydraulic damping technology, it absorbs the impact of the bolt carrier’s rearward motion and prevents bolt bounce when chambering a new round. The RB5001 reduces felt recoil by 20-30% and significantly minimizes muzzle flip, leading to faster follow-up shots and improved second and third shot accuracy. Many shooters find their time to reacquire targets dramatically improved — often staying on target through the entire shooting sequence.

SPECIFICATIONS

• Weight: 8.3 Ounces.
• Length when Compressed: 5 7/8".
• 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 RB2020SS. 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 .233/5.56 mm cal. type AR-15 rifles with a fixed stock, and can be used with other popular AR-15 calibers as well such as .300 BLACKOUT, 6.8 SPC, 6.5 Grendel, .204, etc. 
• This buffer can be used with heavier calibers such as the 458 SOCOM, 450 Bushmaster, 6.5 Grendel, etc. Works great with these calibers due to heavier weight and dampening effects.

The KynSHOT RB5004 "Shorty" Recoil Buffer is built for AR-10 carbines equipped with a collapsible stock and AR-15 length (7.0") buffer tube, a common setup in many AR-10 platforms. This advanced hydraulic buffer uses patented damping technology to absorb the shock from the bolt carrier’s rearward motion and prevent bolt bounce when chambering a new round. The RB5004 effectively reduces felt recoil by 20-30% and greatly minimizes muzzle flip, resulting in improved weapon control and faster follow-up shots. Shooters often report quicker target reacquisition — sometimes staying on target through the entire firing sequence — enhancing overall second and third shot accuracy.

SPECIFICATIONS

• 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 engineered for AR-10 carbines with a collapsible stock that utilize the standard AR-10 length buffer tubes measuring 7.75" internally. Featuring patented hydraulic damping technology, it absorbs the shock from the bolt carrier’s rearward motion and prevents bolt bounce when chambering a new round. The RB5005 reduces felt recoil by 20-30% and virtually eliminates muzzle flip, leading to faster follow-up shots and improved second and third shot accuracy. Shooters often find their target reacquisition time significantly reduced, frequently staying on target through the entire shooting sequence.

SPECIFICATIONS

• 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. 

The KynSHOT RB5006 Recoil Buffer is purpose-built for AR10/.308 rifles equipped with a fixed stock. Constructed from durable 17-4 stainless steel, the RB5006 is a trusted solution used extensively by civilian competition shooters, law enforcement, and the U.S. Armed Forces. This buffer incorporates KynSHOT’s patented hydraulic damping technology to absorb the impact from the bolt carrier’s rearward motion and to eliminate bolt bounce when chambering the next round. By reducing felt recoil by 20-30% and virtually eliminating muzzle flip, the RB5006 dramatically improves weapon control and accuracy — especially for rapid second and third shots. Shooters often experience quicker target reacquisition, with many remaining on target through the entire firing sequence.

SPECIFICATIONS

• Weight: 7.7 Ounces.
• Length when Compressed: 5.25”. Replaces buffers that are 5.25″ 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. Please 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 a fixed stock. Fixed stocks can include the Magpul MOE Fixed stock, Magpul PRS Stock and the standard A2 fixed stock as well as others as long as they have a standard fixed stock buffer tube. AR-10 and AR- 15 fixed stock buffer tubes are the same size.
• This buffer was designed for 7.62mm/.308 cal. rifles, but will also work well with other cartridges based on the .308 case such as the .338 Federal, .260 Remington, .243 Winchester etc.
• Works with factory buffer spring.