Details
Details
Reduce felt recoil and improve cycling reliability with the Spike's Tactical ST-T2 Tungsten Heavy Buffer 4.0 oz. This heavier buffer slows bolt carrier velocity, helping tame over-gassed systems and deliver smoother, more controlled shooting.
The Spike's Tactical ST-T2 Tungsten Heavy Buffer 4.0 oz is a carbine-length buffer designed for AR-15 platforms using carbine receiver extensions.
Heavier mass slows bolt carrier velocity for reduced felt recoil and less bolt bounce.
Increases dwell time, improving extraction reliability in over-gassed or suppressed setups.
Direct drop-in replacement for standard carbine buffers with no modifications required.
- Type: Heavy Heavy Carbine Buffer
- Length: 3.25"
- Fill: High-Density Tungsten Powder
Compatible with AR-15 and AR-10 platforms using Mil-Spec or commercial carbine-length receiver extensions. Also fits 8" GI-spec AR-10/AR-308 receiver extensions.
Precision machined to mil-spec dimensions for reliable fit and consistent performance. Built from durable materials to withstand years of regular use.
A reliable choice for standard AR-15 carbine builds, replacement parts, and new builds using carbine-length gas systems with 16-inch barrels.
Spike's Tactical is a veteran-owned manufacturer of AR-15 rifles and components, known for innovative designs and dependable performance trusted by military, law enforcement, and civilian shooters.
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.Ratings & Reviews
243 reviews
Great Buffer
by Brent Sabino
Works like its supposed too. Super Smooth Recoil. Midlength 16" DD with PRI QBC. Going with same buffer in a 11.5" DD SBR.
Spider
by Michael Hardy
Works great. The spider graphic is a nice touch.
T2 buffer
by Klinton
Works great, shipped super fast!
Great prices at P/A
by Jeff Phillips
Works great with the WMD NIBx bolt carrier in my DPMS carbine!!!
Heavy Buffer
by Robert
Works great in carbine and mid length rifles to help follow on shots.
Spikes buffer
by Pat Campo
Works great as usual primary arms super fast shipping cant ask for more
Spikes ST-T2 Tungsten Heavy buffer
by Tom
Works good for it's intended use. This is my second one.I will wait for another sale to get my third.
Spikes tactical buffer
by Jeffrey Elias
works fantastic, I like the black and the spider logo on it. And again you can't beat the speed of delivery. Primary Arms is 2nd to none.
Felt recoil is lower with this buffer weight
by Owen
Works as it's supposed to. Felt recoil of even 5.56 was lessened.
Spike's ST-T2
by AF_Otpryc
Works as advertised, especially if used with an aftermarket compensator. I have ST-T2 and Rainier XTC on my Bushmaster gas piston. Shoots like a 22 magnum. Thanks Primary Arms for the expedient shipping.