XM177 question > AR-15 / M-16 Retro Forum

Posted: 3/13/2008 11:46:18 AM EDT

Did XM177's (10" barrel version) ever come with slickside receivers, or where that all E1 receivers?

Dawg

Posted: 3/13/2008 11:52:33 AM EDT

[#1]

610

Posted: 3/13/2008 12:32:13 PM EDT

[#2]

Sweet...I don't have a spare E1 upper, but I just scored a Colt SP1 upper receiver with all parts installed for $80 on the EE and got an adapter pin for $2 at Brownells.

Thanks VAAR!

Posted: 3/14/2008 8:55:21 AM EDT

[#3]

Quoted:
got an adapter pin for $2 at Brownells.

I'm hoping you meant an adapter SLEEVE.

The pins are for using a small hole upper on a large hole lower.

Posted: 3/14/2008 9:19:01 AM EDT

[#4]

Quoted:
Sweet...I don't have a spare E1 upper, but I just scored a Colt SP1 upper receiver with all parts installed for $80 on the EE and got an adapter pin for $2 at Brownells.

Thanks VAAR!

That's a great deal and may have to go that route myself! Been looking for a reasonably priced original gray 604 upper for some time with no luck.

I remember when the SP1 uppers brought in much more than the surplus 604 uppers.

Posted: 3/14/2008 10:04:00 AM EDT

[#5]

Quoted:

Quoted:
got an adapter pin for $2 at Brownells.

I'm hoping you meant an adapter SLEEVE.

The pins are for using a small hole upper on a large hole lower.

Er, yes, I meant the sleeve.

Yeah, I saw it, thought about it for a day, and finally realized the only difference was the $2 sleeve adapter from a $140-$150 slickside. Pretty mucha no-brainer at that point.

Posted: 3/15/2008 5:43:30 AM EDT

[#6]

Quoted:

Er, yes, I meant the sleeve.

Yeah, I saw it, thought about it for a day, and finally realized the only difference was the $2 sleeve adapter from a $140-$150 slickside. Pretty mucha no-brainer at that point.

Good call. I actually "converted" my SP1 based XM177 clone to small hole a couple of years back, using three of the sleeves. That way I can drop my M4 upper onto it w/o needing to use an adapter pin

Posted: 3/15/2008 6:51:38 AM EDT

[#7]

Quoted:

Good call. I actually "converted" my SP1 based XM177 clone to small hole a couple of years back, using three of the sleeves. That way I can drop my M4 upper onto it w/o needing to use an adapter pin

Cool. What is holding the sleeves in the lower?

Posted: 3/15/2008 8:27:35 AM EDT

[#8]

Quoted:

Quoted:

Good call. I actually "converted" my SP1 based XM177 clone to small hole a couple of years back, using three of the sleeves. That way I can drop my M4 upper onto it w/o needing to use an adapter pin

Cool. What is holding the sleeves in the lower?

Pressure fit, and usually loctite of some sort. I have also seen people do a touch of welding to hold it in place.

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