M4 Carbine

[Dump1567]

I figured I had enough middies in the safe, so I decided to go back to basics. Some of the parts I already had lying around.

BCM 14.5 w/perm. A2X
FA BC w/MP bolt (not sure who made the BC or bolt. Same MP mark on the bolt as my BCM bolt in another rifle)
DPMS carry handle (same forging mark as the upper)
BCM unmarked Mil-Spec M4 collapsible stock
JD Lower
DD LPK (used a stardard triggerguard instead of the supplied MOE)
M4 double heat shield handguards
Military sling

Extras
Noveske end plate
gripper wedge
Stag ambi-safety
Bullet button to comply with CA law
10/30 mag (another dumb CA law thing)

Sorry, not the best pics.

[Quentin]

Hey, not a bad build at all! Nice pics too. Bet she'll do just fine. Maybe a better sling later on...

Only question, the DPMS carry handle is commercial height, not designed for the F-marked FSB. Do you have to turn the front post way down to zero?

[Dump1567]

Hey, not a bad build at all! Nice pics too. Bet she'll do just fine. Maybe a better sling later on...

Only question, the DPMS carry handle is commercial height, not designed for the F-marked FSB. Do you have to turn the front post way down to zero?

I just put this together today, so I haven't fired it yet.

I was unaware that detachable carry handles come in different heights? I'll have to check into this. I actually have another carry handle coming from Spikes which should be mil-spec. I guess I'll switch them out.

[Quentin]

Yeah the Spikes CH should be milspec height. When you have them side by side I bet you'll see it's obvious the DPMS has a lower shelf that the sight cage is mounted on.

Anyway again, nice job on your build!

[Dump1567]

Thanks again for the info. on the CH height.

I had actually ordered the Spikes first, but my impatience (wanting to build this weekend) forced me to order the DPMS CH (the Spikes CH won't be here until Mon.).

You can definety tell the difference in these pics from Rainiers website.

DPMS vs. Stag

[Quentin]

Rainier's excellent picture makes the difference obvious. Once you know what to look for it's easy to pick out. DPMS, Bushmaster, ArmaLite and others use this commercial height which is identical to the A2 integrated carry handles but not to flat top removable CHs. Those brands use the shorter A2 FSB so their sights do match up. BCM and others use the proper F-marked FSB which should have the taller rear sight. Most third party BUIS are the taller milspec height as well.

You especially get in trouble with the tall rear sight and shorter FSB. Until I figured it out this drove me crazy when I put the tall rear sight on an ArmaLite! Bushmaster sells a taller sight post that you screw in to solve the problem.

Your issue is the opposite but there is a free solution. The DPMS carry handle can be reindexed about 14 clicks below zero to raise the sight well off the low shelf. Or of course just use the Spikes...

Again, nice build, Dump!

[Frens]

hope this help
nice built btw!