2010年11月17日 · The PCAP's were developed by HK GmbH for the XM8 to provide quick attach/release and return to zero. The idea was mine based on the proven mounting interface used on various HK hunting rifles with the "O5" mount.

The XM8 abandoned the standard Picatinny rail for attachment of weapon accessories, in favor of a new standard referred to as PCAP (Picatinny Combat Attachment Points), small oval holes on the forward grip. (A variant was designed with MIL-STD-1913 rails — XM8 R; and some early XM8 prototypes had rails.)

xm8不再采用m1913皮卡汀尼导轨系统，而是采用外表平整的孔状皮卡汀尼联结点（pcap），这种菱状销柱衔接技术已经申请专利。 这种联结方式能够自动对正，因此使XM8的瞄准具能够保持归零，只需要在出厂前由工人校正归零，那么士兵在拆卸了瞄准具后再重新安装 ...

2024年8月30日 · Inspired by HK's -05 mount system, which was the first system to use negative space or a female receptacle on the weapon and male hooks on the scope mount. I've been trying to find dimensions on the PCAP system for years with no luck, so I decided to reverse engineer it as best I could based on images.

2004年2月16日 · Rails have been replaced by "PCAPS", an attachment point system, comprised of the screw-in slots which you can see in the top photo (EGLM w/ range sight). Actually, this is [i]very[/i] similar in concept to the SIR (I'd bet there's more than a passing influence), & one of the better ideas, since it makes for a simpler design.

2024年8月8日 · WTT brings you the derivative from the US Army's OICW program, the XM8. While the XM8 would never be fully adopted by the US Military, it remains faithfully in the limelight through its notable appearances in multiple video games and media through the times.

2019年3月29日 · 2) PCAPS. The PCAPS system came about as a method of easy return to zero mounting for the XM8 accessories as opposed to the then established M1913 Mil spec rail system. The advantage of easy universal zero of integrated reflex or Magnified optic with integrated laser and IR pointer.

2012年2月12日 · The XM8 PCAP's were holes not platforms like found here. The PCAPs worked on the same lines as the HK 05 hunting rifle mounts where the mount "feet" opened up inside the mounting hole. I called them negative mounting features because unlike most other mounting interface PCAP's did not had weight or material to the rifle/part but is fact reduced it.

Mechanically, they’re the same just because the SL8 is a G36. The XM8 furniture isn’t as stout as what my T36 is made out of just because I assume it’s easier for small scale stuff. The T36 has gone to classes and matches, but I wouldn’t do that with the XM8.

Early XM8 prototypes resemble mix-and-match G36 rifles, and feature Picatinny top rails. Spiral 1 XM8 models have the distinctive stylized curved receiver and no Picatinny rails. Instead, they have 2 PCAP holes on their handguard. Spiral 2 XM8 models are …