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The BCM MK2 Buffer Mod 1 T2 is a standalone 5.6 oz buffer made for one job: dialing in a rifle that's already running the BCM MK2 recoil mitigation system. This is not a fix-all upgrade you drop into any AR. It's a tuning piece for folks who already have the MK2 receiver extension and a Mil-Spec M16 rifle action spring, and who want to smooth out how their gun cycles. If your brass is flying forward of the 3 o'clock line or the gun feels snappier than it should, adding weight here is one of the cleanest ways to bring things back into balance.
The T2 lands right in the middle of BCM's weight lineup, which runs from the lighter T0 up through the heavier options. That middle-of-the-road weight makes it a natural pick for setups that are moderately over-gassed. The internal counterweight travels farther than a standard carbine buffer, and that extra movement cuts down on bolt bounce while keeping carrier velocity more consistent shot to shot. More consistent velocity tends to translate into steadier cycling and better manners on the trigger.
This buffer shines when you throw a can on the rifle. Suppressors add backpressure and drive the action harder, and the added mass of the 5.6 oz T2 helps soak up that extra energy so the gun stays reliable without beating itself up. Plenty of people running short-barreled builds and PCC setups land on the T2 as the sweet spot for suppressed shooting. There's also an internal spring inside that keeps the counterweight from rattling and shifting around, so the buffer stays quiet and the weight sits where it should.
It's machined from 7075-T6 aluminum with a hard-coat anodized finish, so it holds up round after round without going soft. Just remember this is an intermediate-length buffer built specifically for the BCM MK2 receiver extension. It will not fit a standard carbine tube, and it needs the MK2 system components to run right. Match it to the correct spring, watch your ejection pattern, and you've got a simple, effective way to tune your rifle.
No. This buffer is built as an intermediate length specifically for the BCM MK2 receiver extension and will not fit a standard carbine tube. It also needs to run with a Mil-Spec M16 rifle action spring. Trying to use it in an incompatible setup can cause damage, so make sure your rifle already has the MK2 system before adding it.
Yes, it handles suppressed fire well. Suppressors add backpressure that drives the action harder, and the 5.6 oz weight of the T2 helps absorb that extra energy while keeping the gun cycling reliably. Many people find this weight is the sweet spot for balancing soft recoil with dependable function when running a can.
Watch your ejection pattern. If your brass is consistently landing forward of the 3 o'clock position, your rifle is over-gassed and would benefit from more buffer weight. The T2 sits in the middle of BCM's lineup, so it's a solid step up for moderately over-gassed builds or if you're already running a lighter buffer but still seeing forward ejection.
The counterweight in the MK2 buffer has more travel than a standard carbine buffer, which reduces bolt bounce and keeps carrier velocity more consistent from shot to shot. There's also an internal spring that keeps that weight from rattling and shifting around. The end result is steadier cycling and a smoother-feeling gun.
| UPC | 812526023070 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | BCM-BFMK2-M1-T2 |
| Product Type | Buffer |
| Model | |
| Color | Black |
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