Uronen Precision Modular Buffer System AR-15

The Uronen Precision Modular Buffer System removes rattles and spring sounds from the AR-15 charging engine. In addition, it makes the recoil softer, eliminates the vibration caused by the charging mechanism, making the recoil significantly clearer and easier to control.

Buffer:

• Buffer UL ultralight 36 grams
• Buffer L light 48 grams
• Buffer R regular 75 grams
• Buffer H heavy 95 grams

• UL is designed for rifles with aluminum or titanium bolt carrier, light recoil spring and roller cam pin
• UL also works with Uronen Precision Low Mass Steel Bolt Carrier
• L is designed for AR-15 rifles with low mass steel bolt carrier
• R replaces typical military specification buffers A1/A2 and M4
• H is designed for AR-15 rifles that need heavier buffer and heavier recoil springs, for example Finn Precision PCC and .223 16" with carbiine gas system

Spring:

• Spring L light: for AR-15 raceguns with roller cam pin
• Spring R regular: for whatever AR-15, expect UP MBS with UL buffer