OPS M4-M (and other OPS Inc thoughts)

[munch520]

I’ve redirected myself from AAC to the Ops-Inc lineup. Can anyone comment on the M4-M an maybe get some pics up? I’ve been looking at the M4-S but want to consider the M as well. I know it’s better suppression, longer length, and heavier. The length it adds is what’s preventing me from pulling the trigger on it…

ETA: concerning my quetsion about mounting on a 12", the response from ADCO is that for 11.5-12" non M4 profiles, $120 contour/collar is necessary:
http://www.adcofirearms.com/shopservices/shop_.cfm?code=21

[the_accuser]

I hope to be approved for my M4-M shortly, been waiting 3 months now. The M4-S really only suppresses the loud report from the muzzle brake. If you really want any decent suppression then I would choose the M4-M. I’ll try and add some pics of different setups with the various models this weekend. Keep trying to get a hold of Steve regarding your barrel.

Length of the M4-M will be in between the 14th & M4-S

L to R: 12th, 16th, 15th, 14th & M4-S

[Todd.K]

@munch520

…what collar/adapter did you need? I have a 12" but I think the barrel profile is the same as a commandos.

You will need a custom collar and or barrel profiling to mount an OPS on anything other than an M4 or MK-12 barrel.

[Apricotshot]

@Todd.K

You will need a custom collar and or barrel profiling to mount an OPS on anything other than an M4 or MK-12 barrel.

Are you sure Todd? I have a DD 12.5 upper that I’m putting a break and collar on later this week. The barrel has a step on it for indexing the collar. From what the folks at ADCO tell me, it should fit without a custom collar (Stock M4S/15th model collar).

OP: I know for a fact you’ll need a custom collar for a 11.5 barrel.

[Ironman8]

This can caught my eye as well a few days ago…but as I understand it, it can’t be used on a 10.5" MK18 build without a collar correct? Doesn’t the collar add length to the barrel (maybe 2 inches) thus negating the “compactness” that I am looking for in a SBR/Suppressor setup? The price is definitely right, but isn’t viable (to me) if it negates the “compactness” of the barrel.

[munch520]

thanks for the responses guys

@Apricotshot

OP: I know for a fact you’ll need a custom collar for a 11.5 barrel.

I assumed that was the case for 11.5s, which I think are virtually the same (save length), as mine. Will confirm with ADCO when I get a hold of them.

rob_s’ picture is what led me to believe it could be done (somehow) on mine

" ‘Mildly modified’ 6933 without can (Ops A2 birdcage mount and collar on barrel)"

[the_accuser]

@Ironman8

This can caught my eye as well a few days ago…but as I understand it, it can’t be used on a 10.5" MK18 build without a collar correct? Doesn’t the collar add length to the barrel (maybe 2 inches) thus negating the “compactness” that I am looking for in a SBR/Suppressor setup? The price is definitely right, but isn’t viable (to me) if it negates the “compactness” of the barrel.

You may be able to use the Ops adapter listed on ADCO’s website or contact Ron from Ops to see if he can make you an adapter. I actually use the Ops adapter for my 10.5" LMT MRP. Just depends if the 10.5" barrel sticks out far enough from your rail. Overall I still have a compact setup.

[Chase45]

Thats the only thing that really stopped me from buying an OPS can was the fact of generally needing a specific barrel profile.

[Ironman8]

@the_accuser

You may be able to use the Ops adapter listed on ADCO’s website or contact Ron from Ops to see if he can make you an adapter. I actually use the Ops adapter for my 10.5" LMT MRP. Just depends if the 10.5" barrel sticks out far enough from your rail. Overall I still have a compact setup.

Couple of questions, but first I guess I should say that this will be a Noveske MK18. The barrel will be .995" (just barely under an inch) exposed from the front of the rail (the DD MK18 RIS II is 9.55" long). Don’t know if that makes a difference? I will call Rob though.

My question for you is, how long is that rail? And how much length is added past the muzzle with your setup? Also, how exactly do the Ops Inc suppressors attach/detatch to/from the muzzle break? I’ve never seen one in person or a demonstration of how it works…

Thanks for the help!

[munch520]

@Chase45

Thats the only thing that really stopped me from buying an OPS can was the fact of generally needing a specific barrel profile.

It does take more planning. But OPS price and durability are hard to beat.

@Ironman8

My question for you is, how long is that rail? And how much length is added past the muzzle with your setup? Also, how exactly do the Ops Inc suppressors attach/detatch to/from the muzzle break? I’ve never seen one in person or a demonstration of how it works…

Thanks for the help!

I think the M4-S only adds 1" or so to the OAL.

ETA: this is the best comparison of the OPS lineup I’ve heard so far.

http://www.youtube.com/watch?v=gdWpOD6CYvE&feature=youtube_gdata_player

[Todd.K]

@Apricotshot

The barrel has a step on it for indexing the collar. From what the folks at ADCO tell me, it should fit without a custom collar (Stock M4S/15th model collar).

Your 12.5" barrel is best described as an “M4 contour”.

[TehLlama]

@Chase45

Thats the only thing that really stopped me from buying an OPS can was the fact of generally needing a specific barrel profile.

It does require a committed host, but until Surefire came out with their FA system this was still the preferred attachment in my mind.

Now I’m stuck trying to decide if I want to add a 16th or M4-M to my 14th and M4S

[the_accuser]

@Ironman8

Couple of questions, but first I guess I should say that this will be a Noveske MK18. The barrel will be .995" (just barely under an inch) exposed from the front of the rail (the DD MK18 RIS II is 9.55" long). Don’t know if that makes a difference? I will call Rob though.

My question for you is, how long is that rail? And how much length is added past the muzzle with your setup? Also, how exactly do the Ops Inc suppressors attach/detatch to/from the muzzle break? I’ve never seen one in person or a demonstration of how it works…

Thanks for the help!

I believe the MRP rail is somewhere around 9". I’m not positive on the exact number since the entire upper is one piece. The little M4-S only adds 1" past the end of the muzzle break. I think the M4-M adds around 4" past the end…still not bad. The Ops cans thread over the brake and butt up against the lip of the collar. Here are a couple of up close pics of my RRA M4 with one of the Ops collars and brake. In the first pic you can see there is a thread protector at the rear of the brake and on the second pic you can see the exposed threads on the brake.

I would talk to Ron from Ops about your setup. I know he has made custom collars in the past. I haven’t seen him post on this forum but if you go to www.silencertalk.com and under the Ops Inc. his userid is k31user…just send him and PM or you can try the contact number listed on www.opsinc.us/contact.php.html

[the_accuser]

@TehLlama

It does require a committed host, but until Surefire came out with their FA system this was still the preferred attachment in my mind.

Now I’m stuck trying to decide if I want to add a 16th or M4-M to my 14th and M4S

I would probably go with the 16th. I’m sure the M4-M will be close to the performance of the 14th and there is a big difference between the 14th and 16th or at least to my ears.

[Mr_Goodtimes]

On the topic of OPS cans… I’m left handed and shot a friends suppressed 12.5in SBR w/ KAC NT4 and it was somewhat of a buzz kill. While a sick setup the gas blowback was un-tolerable for me. The shit hitting me in the face I could deal with but the gasses were making my eyes close involuntarily. Granted this was at an indoor range but it still got me thinking…

My questions are…

1. Would an OPS 16th likely be the best setup for me as a left handed shooter?

2. Do the OPS cans have the least amount of blow back?

3. If not what is likely to have the least amount of blow back?

4. How do the OPS cans suppress compared to other brands such as AAC, Surefire and KAC? I don’t know anyone with an OPS can and cant seem to find any good sound bites of them on the web.

[the_accuser]

@Mr_Goodtimes

On the topic of OPS cans… I’m left handed and shot a friends suppressed 12.5in SBR w/ KAC NT4 and it was somewhat of a buzz kill. While a sick setup the gas blowback was un-tolerable for me. The shit hitting me in the face I could deal with but the gasses were making my eyes close involuntarily. Granted this was at an indoor range but it still got me thinking…

My questions are…

1. Would an OPS 16th likely be the best setup for me as a left handed shooter?

2. Do the OPS cans have the least amount of blow back?

3. If not what is likely to have the least amount of blow back?

4. How do the OPS cans suppress compared to other brands such as AAC, Surefire and KAC? I don’t know anyone with an OPS can and cant seem to find any good sound bites of them on the web.

Ops cans are of the reflex design (mounts back over the barrel) which typically have less blowback. I don’t notice any gas in the face on any of my setups. Maybe some other Ops owners will chime in on their experiences.

IMO, Ops cans rank right up there with the others you mentioned in performance and durability. Yeah, their mounting system may be older and not as cool but it works and works well. Ops can have a nice tone to them. I wish I had some videos.

[Mr_Goodtimes]

@the_accuser

Ops cans are of the reflex design (mounts back over the barrel) which typically have less blowback. I don’t notice any gas in the face on any of my setups. Maybe some other Ops owners will chime in on their experiences.

IMO, Ops cans rank right up there with the others you mentioned in performance and durability. Yeah, their mounting system may be older and not as cool but it works and works well. Ops can have a nice tone to them. I wish I had some videos.

Thanks Accuser. I’m wondering if I went with a regular can if I would eventually just get used to the gasses and thus my eyes quit watering/involuntarily closing.

Right now however, the candidates are the Ops 16th and AAC SPR M4.

[ALCOAR]

@the_accuser

I believe the MRP rail is somewhere around 9". I’m not positive on the exact number since the entire upper is one piece. The little M4-S only adds 1" past the end of the muzzle break. I think the M4-M adds around 4" past the end…still not bad. The Ops cans thread over the brake and butt up against the lip of the collar. Here are a couple of up close pics of my RRA M4 with one of the Ops collars and brake. In the first pic you can see there is a thread protector at the rear of the brake and on the second pic you can see the exposed threads on the brake.

I would talk to Ron from Ops about your setup. I know he has made custom collars in the past. I haven’t seen him post on this forum but if you go to www.silencertalk.com and under the Ops Inc. his userid is k31user…just send him and PM or you can try the contact number listed on www.opsinc.us/contact.php.html

It’s equivalent to roughly 9 3/4"

[markm]

@munch520

I’ve redirected myself from AAC to the Ops-Inc lineup.

Why on God’s green Earth would you want an Ops can over an AAC?

[Apricotshot]

@Todd.K

Your 12.5" barrel is best described as an “M4 contour”.

Ahh I get it.