Bolt tail configuration with M4 clones/Turknellis

[Dentside]

Hello to all...

I'm in the market for an M4 clone (a.k.a. Turknelli) and would like some insight into a particular reliability/longevity issue that has come to my attention.

As background, I have learned that the Sulun Tac 12 and the Benelli M4 itself have a shim/rivet bolt tail. Apparently, the shims/rivets can rust and/or crack and fail. I've learned that the Canuck Operator has a machined bolt tail. Is the Canuck Operator the only M4 clone with a machined bolt tail? I see the Revolution Armory Impact R4 gets good press (albeit very little) and seems to be favoured by S&J. Does anyone know what sort of bolt tail is used in the R4?

Cheers,

 

[ApoC_101]

Right, the bolt tail of the R4 is also comprised of sheet metal and structural rivet/fastener, and in my opinion this is actually the best way to build it, Benelli did it right.

Reason it makes sense is because it's easy to control the quality of sheet metal members, and structural rivets are incredibly strong and reliable, so long as they aren't utter dog####. I design a lot of equipment with mechanical components made this way, it's smart and reliable when done right.

I had a close look at this assembly in my R4 when I had it apart, after 500 rounds, and saw no indications of concern, the parts and fasteners there look well made.

Hope that helps!

Edit: I also don't think a machined member would be superior, if it were superior material it would certainly add unnecessary cost, IMO to do so, would be a poor design change. Some designers and engineers feel the need to muck around, revision in the name of personal creative signature, I prefer never to fix what isn't broken... Benelli M4 don't have a reputation for failure in this area that I'm aware of

 

[Dentside]

Thanks for your input, ApoC...glad your R4 is holding up so far. I'm leaning towards an Impact myself and it's encouraging to read your thoughts. It also helps that the folks at S&J seem to favour them.

I watched a video posted by a fellow regarding his Canuck Operator. He noted in his comments that he had read forum postings regarding Benelli owners who were complaining about rusted or cracked shims (maybe rivets, too). Could be bull#### or poor maintenance or unusual circumstances...? Who knows?

Regardless, I appreciate your comments.

Cheers!

 

[deagle2008]

Hello to all...

I'm in the market for an M4 clone (a.k.a. Turknelli) and would like some insight into a particular reliability/longevity issue that has come to my attention.

As background, I have learned that the Sulun Tac 12 and the Benelli M4 itself have a shim/rivet bolt tail. Apparently, the shims/rivets can rust and/or crack and fail. I've learned that the Canuck Operator has a machined bolt tail. Is the Canuck Operator the only M4 clone with a machined bolt tail? I see the Revolution Armory Impact R4 gets good press (albeit very little) and seems to be favoured by S&J. Does anyone know what sort of bolt tail is used in the R4?

Cheers,

I have a BNIB turkneli M4 for sale. It's on equipment exchange. Can give it to you for $775. You can either pick it up from vancouver or you can pay for shipping ��