2018年1月7日 · upper receiver- standard M4/M4A1 bolt carrier group- standard M16A4/M4/M4A1 charging handle- Geissele Airborne Charging Handle in Desert Dirt Color with subdued markings- P/N 05-664S- NSN 1005-01-672-4803 barrel- Daniel Defense 14.5" mid length "GOV" profile with .076" gas port- P/N 07-077-07308

2021年6月12日 · I sold a URGI with a 10.3" barrel and have an MK16 with a 11.5" barrel and an MK18 RIS II with a 10.3" barrel. The 11.5" barrel MK16 has more M-Lok slots than the 10.3" URGI and feels really good. It has the large top tab keyed to …

2019年12月1日 · 1) Acquire any military contract M4/M4A1 upper new or used. 2) Acquire any military contract M16 bcg new or used. 3) Acquire the URGI parts listed a few pages back, all available commercially 4) Assemble and enjoy

2020年5月18日 · I have urgi 10.3" and its a nice rail but i dont think its worth what G wants for it especially since its not a exclusive clone piece and you need a very low profile gb to clear the rail , mine has a G gb and theres not much room but thankfully the 10.3 is stiffer and dorsnt flex as much . Your ris II is a stronger rail just not as thin.

2021年11月7日 · I prefer the Elcan. I’ve come to really dislike LPVO’s. I actually started with a Razor 1-6 on my Block II and traded it for an Elcan 1-4 which I still have. I later picked up a Razor 1-10 for my URGI, kept it for a bit and sold it. I recently picked up another Razor 1-10, kept it for a day and went right back to my T2 on the URGI.

2022年11月3日 · I bought a Geissele URGI 14.5 upper and paired with an LMT MARS lower as my hard use setup; Geissele gets shit on a lot here, but their stuff on holiday sales is hard to beat. The Colt Federal Patrol Carbine is really good for the money, but if you want to spend more, the LMT MARS rifles are really good.

2019年7月3日 · The M4 parts receive the cage code. They also stopped using the c mark on the bcg as well, instead they now have the cage code engraved under the extractor on the bolt. This is how they mark their M4 bcg’s now. The parts we receive from colt are the M4 parts, as sagmill mentioned, it was not a simple process to get the correct part numbers.

2023年2月7日 · You can see the lower was most likely updated from one marked "M4 Carbine" to "M4A1 Carbine". The second picture gives the most detail of the receiver roll marks. [ARCHIVED THREAD] - FN in the wild (Mk18, M4, M16, EOD, Sopmod, URGI, etc)

2022年1月5日 · USSOCOM released a series of improvements to the M4 upper + CQBR/Mod1 programs. The SOPMOD blocks reference the included handguards, optics, lasers, etc which accompanied those improvements. "Block 3" is more like a turn of phrase to include the URGI currently being fielded by USASOC.

2024年10月10日 · I’m running the 11.5 URGI build with an RC2 but used a Colt H2 buffer and Colt carbine spring. My ejections are all 2:00 and there’s a ton of gas blow back. Will the Geissele Super 42 Braided Wire Buffer Spring and Buffer Combo, H1 help? Since these ship with the 14.5 URGI, are they considered correct across all three barrel lengths?