Does The BCM MK2 Recoil Mitigation System Work?

Estimated studying time: 10 minutes

I do know what you’re pondering: The .223/5.56 doesn’t generate lots of recoil, so what’s to handle? Certainly, the .223/5.56 doesn’t create lots of recoil. In actuality, the BCM MK2 Recoil Mitigation System does extra than simply soften recoil. Consider it as balancing your rifle so it performs higher. It makes your rifle cycle smoother as a result of it spreads the recoil impulse alongside an extended spring and since it’s each easy biking and reduces recoil it means that you can get on track sooner for follow-up pictures.

In case you use a crimson dot or LPVO the BCM MK2 Recoil Mitigation System will allow you to see your hits via the optic. The opposite profit is the BCM MK2 Recoil Mitigation System will make your rifle extra dependable it doesn’t matter what size fuel system you employ. Earlier than we get into the BCM MK2 Recoil Mitigation System, let’s have a look at what an AR15 buffer does.

What Does An AR15 Buffer Do?

The buffer tube or receiver extension is hooked up on the rear of the AR15 decrease. It contains three components; the buffer spring or recoil spring, buffer, and buffer tube. The buffer tube is what the inventory is hooked up to. The buffer tube has one other job moreover connecting the inventory to the decrease receiver. It’s a part of the biking system on the AR15. When a spherical is fired and burning gases ship the BCG (Bolt Service Group) rearward the buffer and recoil spring manages the BCG’s ahead motion again into the battery.

BCM T0 buffer vs a mil-spec carbine buffer — The BCM T0 buffer (left) is noticeably longer and heavier than a mil-spec carbine buffer (proper).

BCM buffer spring vs a mil-spec buffer spring — The BCM buffer spring (prime) in comparison with a mil-spec buffer spring (backside).

Recoil Mitigation Background

Within the early 2000’s the Marines wished to stay with their 20-inch barrel M16A4 rifles however the issue was not all Marines are constructed the identical. The mounted inventory didn’t comfortably match all troopers, plus with troopers carrying physique armor the mounted inventory was a bit too lengthy for Marines of any dimension.

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The Corp figured a collapsible inventory was a good suggestion. In 2009 they despatched out an RFI (Request For Info) for a collapsible inventory that will not compromise the reliability of the rifle. VLTOR Weapons Methods had an answer and referred to as it the A5.

BCM Recoil Mitigation buffer tube vs a mil-spec buffer tube — The BCM buffer tube (prime) is longer than a mil-spec buffer tube (backside).

Historical past Of The A5 System

VLTOR was certain their A5 system can be integrated into the following Marine rifles which might be referred to as the M16A5, therefore the A5 title. That by no means occurred. The VLTOR A5 buffer system was examined by the Marines and decided to be as dependable as a fixed-stock M16A4. However the Marines determined to go along with the M4 carbine and deep-sixed the 20-inch barrel rifles.

Whereas the A5 buffer system was by no means adopted it’s maybe one of the vital helpful upgrades to the AR platform. What the mid-length fuel system did to enhance the entrance of the carbine, the A5 buffer improves the again finish of the gun.

Advantages Of The A5 Buffer System

The A5 accomplishes a couple of issues by utilizing a barely longer receiver extension or buffer tube to accommodate an extended buffer spring or recoil spring and a heavier buffer. Due to the longer rifle-length spring and the added weight of the buffer, the A5 system higher manages the BCG pace and will increase reliability. The result’s a smoother biking carbine with fewer bounces than a carbine with the mil-spec carbine buffer tube. Much less bounce throughout recoil means you will get again on track sooner.

The additional buffer weight makes the gun extra dependable when capturing sizzling ammo or capturing suppressed. The advantage of the longer buffer spring is a smoother biking rifle. The bonus out of the A5 buffer system is lowered felt recoil.

What Is The BCM MK2 Recoil Mitigation System?

The MK2 Recoil Mitigation System is BCM’s tackle the A5 buffer system. The equipment consists of all the required components to put in it to your mil-spec decrease. These components embody an intermediate-length buffer tube or receiver extension that’s about .75 inches longer than a typical carbine-length tube. The tube has 8 parts for the inventory, and due to the MK2’s longer size, some mil-spec shares could not fully collapse all the way in which.

The equipment additionally accommodates a chrome silicon, rifle-length recoil spring or buffer spring; an MK2 Mod 1 -T0 buffer that weighs about 3.8 ounces; a citadel nut; and a receiver finish plate with a QD swivel cup for a sling.

How To Set up The BCM MK2 Recoil Mitigation System

Separate the higher from the decrease receiver and take away the inventory out of your mil-spec buffer tube. Then depress the buffer retainer to take away the buffer and the recoil spring. I used a Brownells Decrease Receiver Vise Block to safe the decrease.

Brownells Lower Receiver Vise Block, lower and vise — A Brownell Decrease Receiver Vise Block helps safe the decrease receiver so the citadel nut may be eliminated.

You’ll need a citadel wrench to take away the citadel nut. I used a Actual Avid Armorer’s Grasp Wrench. With the citadel nut loosened, the buffer tube may be unscrewed from the decrease.

real avid castle nut wrench on an Ar15 — A citadel nut wrench just like the Actual Avid Armorer’s Grasp Wrench is required to take away the citadel nut.

removing the buffer tube from an Ar15 — Loosen the citadel nut, then the buffer tube may be unscrewed from the decrease.

small parts for AR-15 buffer retainer — The buffer retainer and buffer retainer spring are captured by the buffer tube. So remember to maintain these components as you loosen the buffer tube.

AR15 receiver takedown detent and detent spring — The receiver takedown detent and detent spring are captured by the tip plate so ensure they don’t fly out.

buffer retainer for AR15 — Screw the buffer tube into the decrease to seize the buffer retainer. Then use the citadel wrench to tighten the citadel nut.

Thread the BCM buffer tube into the decrease till solely the tip of the buffer retainer sticks up from the decrease. Ensure the receiver takedown detent and detent spring are trapped by the tip plate. You possibly can apply a skinny bead of Loctite blue 242 to the buffer tube threads. Torque down the receiver tube to 35 ft-lbs. Insert the recoil spring and T0 buffer.

BCM MK2 Recoil Mitigation System with T0 buffer — The ultimate step is to insert the BCM recoil spring and the T0 buffer.

AR15 Buffer Weights

BCM has a number of patents on their buffers, which function an inner spring to scale back the noise of counterweight shifting and guarantee extra constant weight placement to scale back bolt bounce. BCM buffers solely work with BCM MK2 Receiver Extensions.

The MOD1 – T1 buffer weighs 4.7 ounces and is an effective selection for a 16-inch barrel carbine to additional cut back recoil and easy out biking. Subsequent, the MOD1 -T2 weighs 5.6 ounces and is an effective possibility for bigger caliber ARs like 7.62x39mm, 300 BLK, and 6.5 Grendel. The MOD1 -T3 weighs 6.5 ounces and the heaviest buffer, the MOD1 – T4 at a hefty 7.4 ounces, is finest suited to a 9mm.

Different producers mark their buffers with letters to point weight and it is not uncommon to seek out buffers marked S which weighs 3.30 ounces, H is 3.8 ounces, H1 is 4.00 ounces, H2 is 4.65 ounces, H3 is 4.85 ounces, and P is 7.60 ounces. Most AR15s include a carbine buffer that weighs about 3 ounces.

BCM Recoil Mitigation System buffers T1 (4.7 ounces), T2 (5.6 ounces), T3 (6.5 ounce), and T4 (7.4 ounces — The selection of buffer relies on the rifle. BCM buffers from left to proper: T1 (4.7 ounces), T2 (5.6 ounces), T3 (6.5 ounces), and T4 (7.4 ounces).

The buffer may help you fine-tune your AR to cycle easily. The best way to examine in case you have a superb setup is to observe the place your AR spits out empties. If the ejection angle is between 12:00 and three:00, your gun is over-gassed and also you would possibly want a heavier buffer.

If empties are between 4:30 and 6:00 your AR is underneath gassed and also you would possibly want a lighter buffer. These points may additionally imply points together with your fuel block. Good ejection is at 3:00 and 4:30. Your AR must be ejecting in 3-4:30 space earlier than you begin experimenting with buffer weights.

The BCM MK2 Recoil Mitigation System In Motion

I ripped via {a magazine} earlier than I put in the BCM MK2 Recoil Mitigation System to remind myself of the recoil biking of a carbine-length fuel system. I used a mil-spec A2 model inventory for the capturing earlier than and after set up. In case you shoot rifle- or mid-length fuel system weapons and change to a carbine-length system you’ll discover a distinction in how the carbine cycles and the felt recoil. After putting in the BCM MK2 Recoil Mitigation System I began capturing off the bench.

Is the MK2 Recoil Mitigation System Value It?

I attempt to be extra skeptical than cynical and I admit I used to be knee-deep within the cynical swamp earlier than utilizing the BCM MK2 Recoil Mitigation System. After utilizing the BCM buffer system, I can say it gives a greater capturing expertise. Whereas the MK2 Recoil Mitigation System is just not as horny as new furnishings or an optic, it might probably improve your capturing expertise and to me, that’s all that issues.

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