CMMG perfects the drop in AR .22 conversion.

[Ridge]

Now it is possible to practice with full function controls using rimfire ammunition. The Pat Pending Bolt Hold Open Actuator is a 4 second drop-in component that bridges the gap between the standard AR15 bolt catch and the all new pat pending Bolt Hold Open Follower. With tens of thousands of .22 magazines out in circulation, CMMG has developed a drop-in retrofit follower and spring that simply replaces the standard follower and spring of the CMMG magazine. The low cost BHOA/BHOF gives total bolt catch/release function with absolutely no gunsmithing.


BHOA shown in down position


BHOA shown in up position


BHOA consists of simple polymer housing, steel transfer bar and roll pin. Its unique ,self locating design, makes it very easy and fast to install.



Once ammo is depleted, the top half of the BHOF shifts to engage BHOA transfer bar


BHOF kit consists of fully assembled follower and retrofit spring.

Final tooling is nearing completion. We are looking at June 1st to start pushing these out in quantity.

The prices we are shooting for are:

$7.50 for the Follower and Spring
$24.95 for the Magazine with the Follower and Spring

$19.95 for the Bolt Hold Open Actuator assembly

www.cmmginc.com

[Ridge]

Video of device installation and use
http://www.youtube.com/watch?v=4rLioM2_LJE

[GhostRider]

sweet!!!! I gotta get one

[mutt]

That's actually pretty cool. The one thing I don't like about my conversion bolt and dedicated upper - no bolt hold open. Wonder if this will work with spike's tactical bolts? Don't see why not, anyone know for sure?

[sniper7]

very sweet! i really need to get me a .22 conversion!

[Ridge]

That's actually pretty cool. The one thing I don't like about my conversion bolt and dedicated upper - no bolt hold open. Wonder if this will work with spike's tactical bolts? Don't see why not, anyone know for sure?

CMMG, Spikes and a couple others all use the same design that Jonathan Ciener came up with.

[mutt]

CMMG, Spikes and a couple others all use the same design that Jonathan Ciener came up with.

Yeah, I figure there's a 99% chance they'll all work with this. But one never knows. I know spike's uses a slightly different firing pin than the other guys.

[Jer]

Why not just get something like an M&P15-22? For the price it's tough to beat.

[StagLefty]

Why not just get something like an M&P15-22? For the price it's tough to beat.

^ #1

[Ridge]

M&P-15/22 = $480-500?
CMMG .22 kit - $180 + you can trian for cheap with the exact same weapon you shoot .223 out of.