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
outstanding service
by anonymous
Parts are what I expected but the service is outstanding. quickest delivery in the business.
nice
by Julio
item arrived as advertised can't wait to get to the range to test it
Heavy Buffer
by Robert
Works great in carbine and mid length rifles to help follow on shots.
Heavier and quieter
by anonymous
Another great sale item from Primary Arms. My H1 weighed 3oz, this weighed 4.1oz.
Great Product
by RAY MOWERY
Excellent product and excellent service.
great buffer, better company
by M W
I had trouble ordering and talked to two different staffers by email and phone. Super friendly and easy to work with. Very professional. The buffer is pretty good too. I bought two and regret nothing.
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.
Great buffer
by DC
Ive had the buffer for a few months now it does exactly what they say it does quiet and smooth, in the carbine rifle helps with feeding and recoil. Well worth the purchase. just bought #2 stt2 buffer 12/20/14
Great buffer
by DC
Ive had the buffer for a few months now it does exactly what they say it does quiet and smooth, in the carbine rifle helps with feeding and recoil. Well worth the purchase. just bought #2 stt2 buffer 12/20/14
Great buffer
by anonymous
Great buffer...What else can you say about it?