358 Gremlin AR build

[racr28]

I am building a AR15 chambered in 358 Gremlin. I am using a Shillen CM barrel with an M4 extension and M4 flat top upper, SI Defense 7.62 x 39 BCG, PRI Magazine. The lower will be built on a DPMS lower with A2 stock.

I just finished threading and chambering the barrel. Fireball168 of BFG Design was instrumental in helping me get this project going. Here are some bad cell phone picks of the progress so far.

I will be contouring the barrel and parkerizing it and assembling the rifle this next week. More pictures to follow.

 

[kludge]

Tag. Are you doing the lathe work yourself? What is the barrel length?

 

[racr28]

Tag. Are you doing the lathe work yourself? What is the barrel length?

Yes, I am doing all the machining. The finished barrel length will be 18 inches with a rifle length gas system. I will probably use a recessed 11 degree crown.

 

[Remington1100]

Very cool. We will need pics of the entire process and after its complete so we can drool a little bit.

 

[racr28]

Here is a mock up of the upper after contouring the barrel. Next up parkerizing, drill the gas port, assemble and test fire.

 

[dave29]

Man that looks awesome. Jealous.

 

[kludge]

Any idea on the weight of the finished rifle?

 

[racr28]

I don't have the weight right know. I contoured the barrel pretty heavy. I wanted a pretty heavy AR at the end. When I get it finished this week, I will weigh it and post the weight. I could have taken some of the weight off the barrel by fluting it, but I did feel it was needed.

 

[esrice]

Very neat! What is the purpose/reason for building in this caliber?

 

[racr28]

Very neat! What is the purpose/reason for building in this caliber?

I just wanted something a little different to hunt deer with and wanted to learn a little about fireforming my own ammo.

 

[esrice]

I just wanted something a little different to hunt deer with and wanted to learn a little about fireforming my own ammo.

Ahhh its legal for deer-- gotcha.

Looking forward to following your progress!

 

[racr28]

Here is the completed rifle. It has a DPMS lower and Leupold scope with Burris Mount.

 

[starbreather]

Wow, what a process it's pretty awesome to get to see. Are you planning, by the fireforming comment, to make your own projectiles & the brass is of what caliber. I am pretty confident I have read you are necking up brass. I guess/know its way out of my knowledge base, but I would like to be educated. I think to make your own rifle and ammo is a valuable trait/skill to hsve.

 

[kludge]

Very nice!

 

[gunselman]

Any updates on this thing? How is it going? Any feeding issues? What mags are you using?