Gonna get some from the cloners, but that's OK...

Ever since I was in high school (early 80s) I've loved the look of the XM177 series. I've always wanted one, but I've never had the patience or willingness to spend $$ to source accurate parts for a true clone.

So, I decided to build an XM177E1-ish SBR on whatever available parts got me close enough. That ended up being Griffin Armament's XM Linear Comp, DPMS A2 upper, PSA 10.5" complete AR barrel assembly (part of a $300 complete upper weekend deal), el-cheapo single heatshield handguards, an M&A Parts milspec CAR stock, and an extra SBR lower I had sitting in the safe. I was  surprised the PSA upper came with the bayonet lug shaved off -- I thought I'd have to grind it off myself, so that was a bonus.

The XM Linear Comp makes the short barrel almost pleasant to be around and the iron sights are just plain fun. Weight is just under 6lbs empty, making the carbine easy to shoot offhand. No problems to report after 50 rounds to zero the irons at 50yds and bang a 6" steel plate at 100yds. I haven't shot for groups and probably never will, but I'd estimate 2MOA on average, which is acceptable accuracy (to me) for a simple irons-only trunk gun.

No issues at all with the F-marked FSB zeroing with the A2 rear sight. So far, I'm very happy with this little popgun!

Nice blaster, didn't know they made an XM style comp.

Griffin did a limited run of linear comps with the exact external dimensions of a real XM moderator. The Griffin units come complete with a grenade ring, but I left that off because the E1s don't use it.

Upvoted on your other post as well





That's a sweet set-up, OP. I like the mix of old and new.

LOL - thanks. Had no idea there was so much spillover between ARFCOM and Reddit.

Nice stick OP!  I was wondering about the effectiveness of the GA XM linear comp because it's 2x the going price of a faux moderator.  So I'd take it that you're pretty happy with it.

I like it a lot.  It does kind of look like, hmmmmm that upper should be an A1, but who cares....  It's awesome.  

2moa is super great.  I'm jealous of your eyesight.  I've decided that carbine sight radius and me just don't work well together.  And I hate that.

Yep, the linear comp works as intended and sends much of the blast of the 10.5" barrel downrange. I also really like having a 1:7 twist barrel so I can use my stock of 75/77gr loads, even in the deep-freeze temps that tend to accompany my Dec - Feb outdoor shooting.

NICE!!!  I like it, good mix of parts.

*edit* though I would swap the grip with a standard A2, the magpul maybe a bridge too far?

 looks wonderful

do you have a ULR for the comp ?

I'll be the naysayer and say - put a NODAK A1 upper on it

http://www.nodakspud.com/AR%20Lowers.htm

Is a ULR the grenade ring? If so, yes, the Griffin Armament linear comp ships with one.

I may eventually go the whole clone route; we'll see...

sorry,....I meant "url" aka link to there website

LOL


edit-
I just found it

http://www.griffinarmament.com/Griffin-XM-Linear-Comp-p/xmlc.htm

I should have my 14.5" cut back and get that installed.....

Nice job, OP.

Sexy as a blonde, a brunette, a redhead, and 2 Asians!

I really dig it OP. I am a huge fan of A2 sights so that build makes sense to me.

Big approvals from all over my place !

I wouldn't, that thing is beautiful.  

I'd have to agree with JJ ... that's a fairly accurate 653 clone, with the exception of the fiberlite stock instead of the vinyl acetate alloy stock.

IIRC, some of the later Colt653's had the fiberlite stock  ( mine is genuine Colt)

I would LOVE to find an acetate XM177 stock.

this is what I was going for.....






OP...sorry for the thread hijack

All you'll do by chopping it is lose some velocity and get a bigger fireball and noise.  The thing says weeve me awone.

Like every other respectable AR owner I have at least half a dozen A2 grips lying around. Hmmm.

LOL, I just counted the other day, I think I am nearing a dozen from I don't know where!!

Here's mine I did...

Still debating cutting the lug off.